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Finding the Fourth Proportional to 15,527.53, 21,428.04 and 9,239.50

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Solution

The fourth proportional to 15,527.53, 21,428.04 and 9,239.50 is: 12,750.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.53 : 21,428.04 = 9,239.50 : x
  2. Step 2: Convert to fraction form
    15,527.53/21,428.04 = 9,239.50/x
  3. Step 3: Cross multiply
    15,527.53x = 21,428.04 × 9,239.50
  4. Step 4: Simplify right side
    15,527.53x = 197,984,375.58
  5. Step 5: Solve for x
    x = 197,984,375.58/15,527.53
  6. Step 6: Final answer
    x = 12,750.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.