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Finding the Fourth Proportional to 30,449.86, 45,641.43 and 15,659.56

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Solution

The fourth proportional to 30,449.86, 45,641.43 and 15,659.56 is: 23,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,449.86 : 45,641.43 = 15,659.56 : x
  2. Step 2: Convert to fraction form
    30,449.86/45,641.43 = 15,659.56/x
  3. Step 3: Cross multiply
    30,449.86x = 45,641.43 × 15,659.56
  4. Step 4: Simplify right side
    30,449.86x = 714,724,711.57
  5. Step 5: Solve for x
    x = 714,724,711.57/30,449.86
  6. Step 6: Final answer
    x = 23,472.18

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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.