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Finding the Fourth Proportional to 18,345.63, 25,316.97 and 9,962.13

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Solution

The fourth proportional to 18,345.63, 25,316.97 and 9,962.13 is: 13,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.63 : 25,316.97 = 9,962.13 : x
  2. Step 2: Convert to fraction form
    18,345.63/25,316.97 = 9,962.13/x
  3. Step 3: Cross multiply
    18,345.63x = 25,316.97 × 9,962.13
  4. Step 4: Simplify right side
    18,345.63x = 252,210,946.35
  5. Step 5: Solve for x
    x = 252,210,946.35/18,345.63
  6. Step 6: Final answer
    x = 13,747.74

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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.