Home / 22,781.07-31,439.27-12,709.53

Finding the Fourth Proportional to 22,781.07, 31,439.27 and 12,709.53

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Solution

The fourth proportional to 22,781.07, 31,439.27 and 12,709.53 is: 17,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.07 : 31,439.27 = 12,709.53 : x
  2. Step 2: Convert to fraction form
    22,781.07/31,439.27 = 12,709.53/x
  3. Step 3: Cross multiply
    22,781.07x = 31,439.27 × 12,709.53
  4. Step 4: Simplify right side
    22,781.07x = 399,578,377.02
  5. Step 5: Solve for x
    x = 399,578,377.02/22,781.07
  6. Step 6: Final answer
    x = 17,539.93

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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.