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Finding the Fourth Proportional to 18,746.10, 28,082.70 and 10,411.20

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Solution

The fourth proportional to 18,746.10, 28,082.70 and 10,411.20 is: 15,596.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.10 : 28,082.70 = 10,411.20 : x
  2. Step 2: Convert to fraction form
    18,746.10/28,082.70 = 10,411.20/x
  3. Step 3: Cross multiply
    18,746.10x = 28,082.70 × 10,411.20
  4. Step 4: Simplify right side
    18,746.10x = 292,374,606.24
  5. Step 5: Solve for x
    x = 292,374,606.24/18,746.10
  6. Step 6: Final answer
    x = 15,596.56

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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.