Home / 31,585.68-47,381.04-18,439.38

Finding the Fourth Proportional to 31,585.68, 47,381.04 and 18,439.38

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Solution

The fourth proportional to 31,585.68, 47,381.04 and 18,439.38 is: 27,660.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,585.68 : 47,381.04 = 18,439.38 : x
  2. Step 2: Convert to fraction form
    31,585.68/47,381.04 = 18,439.38/x
  3. Step 3: Cross multiply
    31,585.68x = 47,381.04 × 18,439.38
  4. Step 4: Simplify right side
    31,585.68x = 873,677,001.36
  5. Step 5: Solve for x
    x = 873,677,001.36/31,585.68
  6. Step 6: Final answer
    x = 27,660.54

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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.