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Finding the Fourth Proportional to 18,730.56, 25,847.92 and 10,347.20

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Solution

The fourth proportional to 18,730.56, 25,847.92 and 10,347.20 is: 14,279.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.56 : 25,847.92 = 10,347.20 : x
  2. Step 2: Convert to fraction form
    18,730.56/25,847.92 = 10,347.20/x
  3. Step 3: Cross multiply
    18,730.56x = 25,847.92 × 10,347.20
  4. Step 4: Simplify right side
    18,730.56x = 267,453,597.82
  5. Step 5: Solve for x
    x = 267,453,597.82/18,730.56
  6. Step 6: Final answer
    x = 14,279.00

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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.