Home / 28,233.13-42,315.51-15,739.89

Finding the Fourth Proportional to 28,233.13, 42,315.51 and 15,739.89

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Solution

The fourth proportional to 28,233.13, 42,315.51 and 15,739.89 is: 23,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.13 : 42,315.51 = 15,739.89 : x
  2. Step 2: Convert to fraction form
    28,233.13/42,315.51 = 15,739.89/x
  3. Step 3: Cross multiply
    28,233.13x = 42,315.51 × 15,739.89
  4. Step 4: Simplify right side
    28,233.13x = 666,041,472.69
  5. Step 5: Solve for x
    x = 666,041,472.69/28,233.13
  6. Step 6: Final answer
    x = 23,590.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.