Home / 22,961.38-31,688.12-15,291.50

Finding the Fourth Proportional to 22,961.38, 31,688.12 and 15,291.50

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Solution

The fourth proportional to 22,961.38, 31,688.12 and 15,291.50 is: 21,103.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,961.38 : 31,688.12 = 15,291.50 : x
  2. Step 2: Convert to fraction form
    22,961.38/31,688.12 = 15,291.50/x
  3. Step 3: Cross multiply
    22,961.38x = 31,688.12 × 15,291.50
  4. Step 4: Simplify right side
    22,961.38x = 484,558,828.26
  5. Step 5: Solve for x
    x = 484,558,828.26/22,961.38
  6. Step 6: Final answer
    x = 21,103.21

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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.