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Finding the Fourth Proportional to 18,275.63, 25,220.43 and 9,892.13

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Solution

The fourth proportional to 18,275.63, 25,220.43 and 9,892.13 is: 13,651.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.63 : 25,220.43 = 9,892.13 : x
  2. Step 2: Convert to fraction form
    18,275.63/25,220.43 = 9,892.13/x
  3. Step 3: Cross multiply
    18,275.63x = 25,220.43 × 9,892.13
  4. Step 4: Simplify right side
    18,275.63x = 249,483,772.22
  5. Step 5: Solve for x
    x = 249,483,772.22/18,275.63
  6. Step 6: Final answer
    x = 13,651.17

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Half scale
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Double scale
Find fourth proportional to 18,276.63, 25,221.81 and 9,893.13
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.