Home / 15,665.43-21,617.66-9,374.07

Finding the Fourth Proportional to 15,665.43, 21,617.66 and 9,374.07

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Solution

The fourth proportional to 15,665.43, 21,617.66 and 9,374.07 is: 12,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.43 : 21,617.66 = 9,374.07 : x
  2. Step 2: Convert to fraction form
    15,665.43/21,617.66 = 9,374.07/x
  3. Step 3: Cross multiply
    15,665.43x = 21,617.66 × 9,374.07
  4. Step 4: Simplify right side
    15,665.43x = 202,645,411.21
  5. Step 5: Solve for x
    x = 202,645,411.21/15,665.43
  6. Step 6: Final answer
    x = 12,935.83

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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.