Home / 22,699.84-31,322.40-12,761.92

Finding the Fourth Proportional to 22,699.84, 31,322.40 and 12,761.92

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Solution

The fourth proportional to 22,699.84, 31,322.40 and 12,761.92 is: 17,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,699.84 : 31,322.40 = 12,761.92 : x
  2. Step 2: Convert to fraction form
    22,699.84/31,322.40 = 12,761.92/x
  3. Step 3: Cross multiply
    22,699.84x = 31,322.40 × 12,761.92
  4. Step 4: Simplify right side
    22,699.84x = 399,733,963.01
  5. Step 5: Solve for x
    x = 399,733,963.01/22,699.84
  6. Step 6: Final answer
    x = 17,609.55

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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.