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Finding the Fourth Proportional to 9,987.01, 14,904.56 and 8,879.87

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Solution

The fourth proportional to 9,987.01, 14,904.56 and 8,879.87 is: 13,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.01 : 14,904.56 = 8,879.87 : x
  2. Step 2: Convert to fraction form
    9,987.01/14,904.56 = 8,879.87/x
  3. Step 3: Cross multiply
    9,987.01x = 14,904.56 × 8,879.87
  4. Step 4: Simplify right side
    9,987.01x = 132,350,510.81
  5. Step 5: Solve for x
    x = 132,350,510.81/9,987.01
  6. Step 6: Final answer
    x = 13,252.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.