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Finding the Fourth Proportional to 18,355.64, 25,326.42 and 10,802.30

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Solution

The fourth proportional to 18,355.64, 25,326.42 and 10,802.30 is: 14,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.64 : 25,326.42 = 10,802.30 : x
  2. Step 2: Convert to fraction form
    18,355.64/25,326.42 = 10,802.30/x
  3. Step 3: Cross multiply
    18,355.64x = 25,326.42 × 10,802.30
  4. Step 4: Simplify right side
    18,355.64x = 273,583,460.13
  5. Step 5: Solve for x
    x = 273,583,460.13/18,355.64
  6. Step 6: Final answer
    x = 14,904.60

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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.