Home / 40,139.60-60,163.83-13,822.70

Finding the Fourth Proportional to 40,139.60, 60,163.83 and 13,822.70

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Solution

The fourth proportional to 40,139.60, 60,163.83 and 13,822.70 is: 20,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.60 : 60,163.83 = 13,822.70 : x
  2. Step 2: Convert to fraction form
    40,139.60/60,163.83 = 13,822.70/x
  3. Step 3: Cross multiply
    40,139.60x = 60,163.83 × 13,822.70
  4. Step 4: Simplify right side
    40,139.60x = 831,626,272.12
  5. Step 5: Solve for x
    x = 831,626,272.12/40,139.60
  6. Step 6: Final answer
    x = 20,718.35

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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.