Home / 28,239.80-42,373.32-19,972.92

Finding the Fourth Proportional to 28,239.80, 42,373.32 and 19,972.92

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Solution

The fourth proportional to 28,239.80, 42,373.32 and 19,972.92 is: 29,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.80 : 42,373.32 = 19,972.92 : x
  2. Step 2: Convert to fraction form
    28,239.80/42,373.32 = 19,972.92/x
  3. Step 3: Cross multiply
    28,239.80x = 42,373.32 × 19,972.92
  4. Step 4: Simplify right side
    28,239.80x = 846,318,930.49
  5. Step 5: Solve for x
    x = 846,318,930.49/28,239.80
  6. Step 6: Final answer
    x = 29,969.01

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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.