Home / 22,780.48-31,437.24-12,708.76

Finding the Fourth Proportional to 22,780.48, 31,437.24 and 12,708.76

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Solution

The fourth proportional to 22,780.48, 31,437.24 and 12,708.76 is: 17,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.48 : 31,437.24 = 12,708.76 : x
  2. Step 2: Convert to fraction form
    22,780.48/31,437.24 = 12,708.76/x
  3. Step 3: Cross multiply
    22,780.48x = 31,437.24 × 12,708.76
  4. Step 4: Simplify right side
    22,780.48x = 399,528,338.22
  5. Step 5: Solve for x
    x = 399,528,338.22/22,780.48
  6. Step 6: Final answer
    x = 17,538.19

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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.