Home / 22,715.10-31,346.61-12,643.38

Finding the Fourth Proportional to 22,715.10, 31,346.61 and 12,643.38

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Solution

The fourth proportional to 22,715.10, 31,346.61 and 12,643.38 is: 17,447.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.10 : 31,346.61 = 12,643.38 : x
  2. Step 2: Convert to fraction form
    22,715.10/31,346.61 = 12,643.38/x
  3. Step 3: Cross multiply
    22,715.10x = 31,346.61 × 12,643.38
  4. Step 4: Simplify right side
    22,715.10x = 396,327,101.94
  5. Step 5: Solve for x
    x = 396,327,101.94/22,715.10
  6. Step 6: Final answer
    x = 17,447.74

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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.