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Finding the Fourth Proportional to 18,158.76, 25,068.42 and 12,560.04

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Solution

The fourth proportional to 18,158.76, 25,068.42 and 12,560.04 is: 17,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.76 : 25,068.42 = 12,560.04 : x
  2. Step 2: Convert to fraction form
    18,158.76/25,068.42 = 12,560.04/x
  3. Step 3: Cross multiply
    18,158.76x = 25,068.42 × 12,560.04
  4. Step 4: Simplify right side
    18,158.76x = 314,860,357.94
  5. Step 5: Solve for x
    x = 314,860,357.94/18,158.76
  6. Step 6: Final answer
    x = 17,339.31

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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.