Home / 28,158.96-42,254.28-19,400.88

Finding the Fourth Proportional to 28,158.96, 42,254.28 and 19,400.88

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Solution

The fourth proportional to 28,158.96, 42,254.28 and 19,400.88 is: 29,112.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.96 : 42,254.28 = 19,400.88 : x
  2. Step 2: Convert to fraction form
    28,158.96/42,254.28 = 19,400.88/x
  3. Step 3: Cross multiply
    28,158.96x = 42,254.28 × 19,400.88
  4. Step 4: Simplify right side
    28,158.96x = 819,770,215.77
  5. Step 5: Solve for x
    x = 819,770,215.77/28,158.96
  6. Step 6: Final answer
    x = 29,112.23

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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.