Home / 22,780.56-31,437.21-13,349.13

Finding the Fourth Proportional to 22,780.56, 31,437.21 and 13,349.13

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Solution

The fourth proportional to 22,780.56, 31,437.21 and 13,349.13 is: 18,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.56 : 31,437.21 = 13,349.13 : x
  2. Step 2: Convert to fraction form
    22,780.56/31,437.21 = 13,349.13/x
  3. Step 3: Cross multiply
    22,780.56x = 31,437.21 × 13,349.13
  4. Step 4: Simplify right side
    22,780.56x = 419,659,403.13
  5. Step 5: Solve for x
    x = 419,659,403.13/22,780.56
  6. Step 6: Final answer
    x = 18,421.82

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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.