Home / 22,761.67-31,411.23-12,690.74

Finding the Fourth Proportional to 22,761.67, 31,411.23 and 12,690.74

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Solution

The fourth proportional to 22,761.67, 31,411.23 and 12,690.74 is: 17,513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,761.67 : 31,411.23 = 12,690.74 : x
  2. Step 2: Convert to fraction form
    22,761.67/31,411.23 = 12,690.74/x
  3. Step 3: Cross multiply
    22,761.67x = 31,411.23 × 12,690.74
  4. Step 4: Simplify right side
    22,761.67x = 398,631,753.01
  5. Step 5: Solve for x
    x = 398,631,753.01/22,761.67
  6. Step 6: Final answer
    x = 17,513.29

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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.