Home / 28,487.16-42,730.61-7,710.66

Finding the Fourth Proportional to 28,487.16, 42,730.61 and 7,710.66

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Solution

The fourth proportional to 28,487.16, 42,730.61 and 7,710.66 is: 11,565.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.16 : 42,730.61 = 7,710.66 : x
  2. Step 2: Convert to fraction form
    28,487.16/42,730.61 = 7,710.66/x
  3. Step 3: Cross multiply
    28,487.16x = 42,730.61 × 7,710.66
  4. Step 4: Simplify right side
    28,487.16x = 329,481,166.75
  5. Step 5: Solve for x
    x = 329,481,166.75/28,487.16
  6. Step 6: Final answer
    x = 11,565.95

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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.