Home / 31,847.72-47,753.28-13,140.63

Finding the Fourth Proportional to 31,847.72, 47,753.28 and 13,140.63

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Solution

The fourth proportional to 31,847.72, 47,753.28 and 13,140.63 is: 19,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,847.72 : 47,753.28 = 13,140.63 : x
  2. Step 2: Convert to fraction form
    31,847.72/47,753.28 = 13,140.63/x
  3. Step 3: Cross multiply
    31,847.72x = 47,753.28 × 13,140.63
  4. Step 4: Simplify right side
    31,847.72x = 627,508,183.77
  5. Step 5: Solve for x
    x = 627,508,183.77/31,847.72
  6. Step 6: Final answer
    x = 19,703.40

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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.