Home / 31,601.20-47,408.40-10,540.40

Finding the Fourth Proportional to 31,601.20, 47,408.40 and 10,540.40

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Solution

The fourth proportional to 31,601.20, 47,408.40 and 10,540.40 is: 15,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,601.20 : 47,408.40 = 10,540.40 : x
  2. Step 2: Convert to fraction form
    31,601.20/47,408.40 = 10,540.40/x
  3. Step 3: Cross multiply
    31,601.20x = 47,408.40 × 10,540.40
  4. Step 4: Simplify right side
    31,601.20x = 499,703,499.36
  5. Step 5: Solve for x
    x = 499,703,499.36/31,601.20
  6. Step 6: Final answer
    x = 15,812.80

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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.