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Finding the Fourth Proportional to 18,190.46, 25,103.10 and 10,642.20

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Solution

The fourth proportional to 18,190.46, 25,103.10 and 10,642.20 is: 14,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190.46 : 25,103.10 = 10,642.20 : x
  2. Step 2: Convert to fraction form
    18,190.46/25,103.10 = 10,642.20/x
  3. Step 3: Cross multiply
    18,190.46x = 25,103.10 × 10,642.20
  4. Step 4: Simplify right side
    18,190.46x = 267,152,210.82
  5. Step 5: Solve for x
    x = 267,152,210.82/18,190.46
  6. Step 6: Final answer
    x = 14,686.40

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Half scale
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Double scale
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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.