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Finding the Fourth Proportional to 13,384.98, 20,061.54 and 10,087.20

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Solution

The fourth proportional to 13,384.98, 20,061.54 and 10,087.20 is: 15,118.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.98 : 20,061.54 = 10,087.20 : x
  2. Step 2: Convert to fraction form
    13,384.98/20,061.54 = 10,087.20/x
  3. Step 3: Cross multiply
    13,384.98x = 20,061.54 × 10,087.20
  4. Step 4: Simplify right side
    13,384.98x = 202,364,766.29
  5. Step 5: Solve for x
    x = 202,364,766.29/13,384.98
  6. Step 6: Final answer
    x = 15,118.79

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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.