Home / 31,439.13-47,164.53-10,380.65

Finding the Fourth Proportional to 31,439.13, 47,164.53 and 10,380.65

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Solution

The fourth proportional to 31,439.13, 47,164.53 and 10,380.65 is: 15,572.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.13 : 47,164.53 = 10,380.65 : x
  2. Step 2: Convert to fraction form
    31,439.13/47,164.53 = 10,380.65/x
  3. Step 3: Cross multiply
    31,439.13x = 47,164.53 × 10,380.65
  4. Step 4: Simplify right side
    31,439.13x = 489,598,242.52
  5. Step 5: Solve for x
    x = 489,598,242.52/31,439.13
  6. Step 6: Final answer
    x = 15,572.89

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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.