Home / 15,386.52-21,233.90-9,420.92

Finding the Fourth Proportional to 15,386.52, 21,233.90 and 9,420.92

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Solution

The fourth proportional to 15,386.52, 21,233.90 and 9,420.92 is: 13,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.52 : 21,233.90 = 9,420.92 : x
  2. Step 2: Convert to fraction form
    15,386.52/21,233.90 = 9,420.92/x
  3. Step 3: Cross multiply
    15,386.52x = 21,233.90 × 9,420.92
  4. Step 4: Simplify right side
    15,386.52x = 200,042,873.19
  5. Step 5: Solve for x
    x = 200,042,873.19/15,386.52
  6. Step 6: Final answer
    x = 13,001.18

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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.