Home / 29,428.86-40,611.42-15,999.78

Finding the Fourth Proportional to 29,428.86, 40,611.42 and 15,999.78

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Solution

The fourth proportional to 29,428.86, 40,611.42 and 15,999.78 is: 22,079.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,428.86 : 40,611.42 = 15,999.78 : x
  2. Step 2: Convert to fraction form
    29,428.86/40,611.42 = 15,999.78/x
  3. Step 3: Cross multiply
    29,428.86x = 40,611.42 × 15,999.78
  4. Step 4: Simplify right side
    29,428.86x = 649,773,785.49
  5. Step 5: Solve for x
    x = 649,773,785.49/29,428.86
  6. Step 6: Final answer
    x = 22,079.48

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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.