Home / 28,400.74-42,603.42-11,757.66

Finding the Fourth Proportional to 28,400.74, 42,603.42 and 11,757.66

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Solution

The fourth proportional to 28,400.74, 42,603.42 and 11,757.66 is: 17,637.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.74 : 42,603.42 = 11,757.66 : x
  2. Step 2: Convert to fraction form
    28,400.74/42,603.42 = 11,757.66/x
  3. Step 3: Cross multiply
    28,400.74x = 42,603.42 × 11,757.66
  4. Step 4: Simplify right side
    28,400.74x = 500,916,527.20
  5. Step 5: Solve for x
    x = 500,916,527.20/28,400.74
  6. Step 6: Final answer
    x = 17,637.45

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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.