Home / 31,931.56-47,863.32-15,281.20

Finding the Fourth Proportional to 31,931.56, 47,863.32 and 15,281.20

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Solution

The fourth proportional to 31,931.56, 47,863.32 and 15,281.20 is: 22,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.56 : 47,863.32 = 15,281.20 : x
  2. Step 2: Convert to fraction form
    31,931.56/47,863.32 = 15,281.20/x
  3. Step 3: Cross multiply
    31,931.56x = 47,863.32 × 15,281.20
  4. Step 4: Simplify right side
    31,931.56x = 731,408,965.58
  5. Step 5: Solve for x
    x = 731,408,965.58/31,931.56
  6. Step 6: Final answer
    x = 22,905.52

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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.