Home / 35,520.24-49,019.56-20,417.78

Finding the Fourth Proportional to 35,520.24, 49,019.56 and 20,417.78

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Solution

The fourth proportional to 35,520.24, 49,019.56 and 20,417.78 is: 28,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,520.24 : 49,019.56 = 20,417.78 : x
  2. Step 2: Convert to fraction form
    35,520.24/49,019.56 = 20,417.78/x
  3. Step 3: Cross multiply
    35,520.24x = 49,019.56 × 20,417.78
  4. Step 4: Simplify right side
    35,520.24x = 1,000,870,591.78
  5. Step 5: Solve for x
    x = 1,000,870,591.78/35,520.24
  6. Step 6: Final answer
    x = 28,177.47

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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.