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Finding the Fourth Proportional to 9,988.74, 14,987.43 and 5,366.34

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Solution

The fourth proportional to 9,988.74, 14,987.43 and 5,366.34 is: 8,051.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.74 : 14,987.43 = 5,366.34 : x
  2. Step 2: Convert to fraction form
    9,988.74/14,987.43 = 5,366.34/x
  3. Step 3: Cross multiply
    9,988.74x = 14,987.43 × 5,366.34
  4. Step 4: Simplify right side
    9,988.74x = 80,427,645.11
  5. Step 5: Solve for x
    x = 80,427,645.11/9,988.74
  6. Step 6: Final answer
    x = 8,051.83

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1.5x scale

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.