Home / 28,003.32-42,013.20-8,282.40

Finding the Fourth Proportional to 28,003.32, 42,013.20 and 8,282.40

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Solution

The fourth proportional to 28,003.32, 42,013.20 and 8,282.40 is: 12,426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.32 : 42,013.20 = 8,282.40 : x
  2. Step 2: Convert to fraction form
    28,003.32/42,013.20 = 8,282.40/x
  3. Step 3: Cross multiply
    28,003.32x = 42,013.20 × 8,282.40
  4. Step 4: Simplify right side
    28,003.32x = 347,970,127.68
  5. Step 5: Solve for x
    x = 347,970,127.68/28,003.32
  6. Step 6: Final answer
    x = 12,426.03

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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.