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Finding the Fourth Proportional to 32,439.40, 48,659.10 and 12,711.40

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Solution

The fourth proportional to 32,439.40, 48,659.10 and 12,711.40 is: 19,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,439.40 : 48,659.10 = 12,711.40 : x
  2. Step 2: Convert to fraction form
    32,439.40/48,659.10 = 12,711.40/x
  3. Step 3: Cross multiply
    32,439.40x = 48,659.10 × 12,711.40
  4. Step 4: Simplify right side
    32,439.40x = 618,525,283.74
  5. Step 5: Solve for x
    x = 618,525,283.74/32,439.40
  6. Step 6: Final answer
    x = 19,067.10

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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.