Home / 28,204.80-42,323.40-10,687.20

Finding the Fourth Proportional to 28,204.80, 42,323.40 and 10,687.20

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Solution

The fourth proportional to 28,204.80, 42,323.40 and 10,687.20 is: 16,036.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.80 : 42,323.40 = 10,687.20 : x
  2. Step 2: Convert to fraction form
    28,204.80/42,323.40 = 10,687.20/x
  3. Step 3: Cross multiply
    28,204.80x = 42,323.40 × 10,687.20
  4. Step 4: Simplify right side
    28,204.80x = 452,318,640.48
  5. Step 5: Solve for x
    x = 452,318,640.48/28,204.80
  6. Step 6: Final answer
    x = 16,036.94

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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.