Home / 28,470.62-42,720.51-15,335.66

Finding the Fourth Proportional to 28,470.62, 42,720.51 and 15,335.66

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Solution

The fourth proportional to 28,470.62, 42,720.51 and 15,335.66 is: 23,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.62 : 42,720.51 = 15,335.66 : x
  2. Step 2: Convert to fraction form
    28,470.62/42,720.51 = 15,335.66/x
  3. Step 3: Cross multiply
    28,470.62x = 42,720.51 × 15,335.66
  4. Step 4: Simplify right side
    28,470.62x = 655,147,216.39
  5. Step 5: Solve for x
    x = 655,147,216.39/28,470.62
  6. Step 6: Final answer
    x = 23,011.34

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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.