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Finding the Fourth Proportional to 8,979.12, 13,527.27 and 7,039.98

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Solution

The fourth proportional to 8,979.12, 13,527.27 and 7,039.98 is: 10,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.12 : 13,527.27 = 7,039.98 : x
  2. Step 2: Convert to fraction form
    8,979.12/13,527.27 = 7,039.98/x
  3. Step 3: Cross multiply
    8,979.12x = 13,527.27 × 7,039.98
  4. Step 4: Simplify right side
    8,979.12x = 95,231,710.25
  5. Step 5: Solve for x
    x = 95,231,710.25/8,979.12
  6. Step 6: Final answer
    x = 10,605.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.