Home / 31,302.40-47,002.20-18,180.40

Finding the Fourth Proportional to 31,302.40, 47,002.20 and 18,180.40

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Solution

The fourth proportional to 31,302.40, 47,002.20 and 18,180.40 is: 27,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,302.40 : 47,002.20 = 18,180.40 : x
  2. Step 2: Convert to fraction form
    31,302.40/47,002.20 = 18,180.40/x
  3. Step 3: Cross multiply
    31,302.40x = 47,002.20 × 18,180.40
  4. Step 4: Simplify right side
    31,302.40x = 854,518,796.88
  5. Step 5: Solve for x
    x = 854,518,796.88/31,302.40
  6. Step 6: Final answer
    x = 27,298.83

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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.