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Finding the Fourth Proportional to 9,951.38, 14,914.75 and 8,721.19

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Solution

The fourth proportional to 9,951.38, 14,914.75 and 8,721.19 is: 13,070.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,951.38 : 14,914.75 = 8,721.19 : x
  2. Step 2: Convert to fraction form
    9,951.38/14,914.75 = 8,721.19/x
  3. Step 3: Cross multiply
    9,951.38x = 14,914.75 × 8,721.19
  4. Step 4: Simplify right side
    9,951.38x = 130,074,368.55
  5. Step 5: Solve for x
    x = 130,074,368.55/9,951.38
  6. Step 6: Final answer
    x = 13,070.99

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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.