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Finding the Fourth Proportional to 18,535.91, 25,577.93 and 10,980.88

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Solution

The fourth proportional to 18,535.91, 25,577.93 and 10,980.88 is: 15,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,535.91 : 25,577.93 = 10,980.88 : x
  2. Step 2: Convert to fraction form
    18,535.91/25,577.93 = 10,980.88/x
  3. Step 3: Cross multiply
    18,535.91x = 25,577.93 × 10,980.88
  4. Step 4: Simplify right side
    18,535.91x = 280,868,143.49
  5. Step 5: Solve for x
    x = 280,868,143.49/18,535.91
  6. Step 6: Final answer
    x = 15,152.65

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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.