Home / 22,761.66-31,411.24-12,690.74

Finding the Fourth Proportional to 22,761.66, 31,411.24 and 12,690.74

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Solution

The fourth proportional to 22,761.66, 31,411.24 and 12,690.74 is: 17,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,761.66 : 31,411.24 = 12,690.74 : x
  2. Step 2: Convert to fraction form
    22,761.66/31,411.24 = 12,690.74/x
  3. Step 3: Cross multiply
    22,761.66x = 31,411.24 × 12,690.74
  4. Step 4: Simplify right side
    22,761.66x = 398,631,879.92
  5. Step 5: Solve for x
    x = 398,631,879.92/22,761.66
  6. Step 6: Final answer
    x = 17,513.30

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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.