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Finding the Fourth Proportional to 21,751.50, 32,627.25 and 9,439.50

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Solution

The fourth proportional to 21,751.50, 32,627.25 and 9,439.50 is: 14,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.50 : 32,627.25 = 9,439.50 : x
  2. Step 2: Convert to fraction form
    21,751.50/32,627.25 = 9,439.50/x
  3. Step 3: Cross multiply
    21,751.50x = 32,627.25 × 9,439.50
  4. Step 4: Simplify right side
    21,751.50x = 307,984,926.38
  5. Step 5: Solve for x
    x = 307,984,926.38/21,751.50
  6. Step 6: Final answer
    x = 14,159.25

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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.