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Finding the Fourth Proportional to 18,703.64, 25,793.01 and 12,585.13

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Solution

The fourth proportional to 18,703.64, 25,793.01 and 12,585.13 is: 17,355.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.64 : 25,793.01 = 12,585.13 : x
  2. Step 2: Convert to fraction form
    18,703.64/25,793.01 = 12,585.13/x
  3. Step 3: Cross multiply
    18,703.64x = 25,793.01 × 12,585.13
  4. Step 4: Simplify right side
    18,703.64x = 324,608,319.46
  5. Step 5: Solve for x
    x = 324,608,319.46/18,703.64
  6. Step 6: Final answer
    x = 17,355.35

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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.