Home / 31,765.53-43,856.51-20,440.29

Finding the Fourth Proportional to 31,765.53, 43,856.51 and 20,440.29

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Solution

The fourth proportional to 31,765.53, 43,856.51 and 20,440.29 is: 28,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,765.53 : 43,856.51 = 20,440.29 : x
  2. Step 2: Convert to fraction form
    31,765.53/43,856.51 = 20,440.29/x
  3. Step 3: Cross multiply
    31,765.53x = 43,856.51 × 20,440.29
  4. Step 4: Simplify right side
    31,765.53x = 896,439,680.59
  5. Step 5: Solve for x
    x = 896,439,680.59/31,765.53
  6. Step 6: Final answer
    x = 28,220.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.