Home / 31,425.06-47,144.16-28,288.20

Finding the Fourth Proportional to 31,425.06, 47,144.16 and 28,288.20

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Solution

The fourth proportional to 31,425.06, 47,144.16 and 28,288.20 is: 42,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.06 : 47,144.16 = 28,288.20 : x
  2. Step 2: Convert to fraction form
    31,425.06/47,144.16 = 28,288.20/x
  3. Step 3: Cross multiply
    31,425.06x = 47,144.16 × 28,288.20
  4. Step 4: Simplify right side
    31,425.06x = 1,333,623,426.91
  5. Step 5: Solve for x
    x = 1,333,623,426.91/31,425.06
  6. Step 6: Final answer
    x = 42,438.21

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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.