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Finding the Fourth Proportional to 9,987.13, 14,978.85 and 4,062.58

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Solution

The fourth proportional to 9,987.13, 14,978.85 and 4,062.58 is: 6,093.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.13 : 14,978.85 = 4,062.58 : x
  2. Step 2: Convert to fraction form
    9,987.13/14,978.85 = 4,062.58/x
  3. Step 3: Cross multiply
    9,987.13x = 14,978.85 × 4,062.58
  4. Step 4: Simplify right side
    9,987.13x = 60,852,776.43
  5. Step 5: Solve for x
    x = 60,852,776.43/9,987.13
  6. Step 6: Final answer
    x = 6,093.12

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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.