Home / 28,380.48-42,568.04-13,384.12

Finding the Fourth Proportional to 28,380.48, 42,568.04 and 13,384.12

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Solution

The fourth proportional to 28,380.48, 42,568.04 and 13,384.12 is: 20,074.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.48 : 42,568.04 = 13,384.12 : x
  2. Step 2: Convert to fraction form
    28,380.48/42,568.04 = 13,384.12/x
  3. Step 3: Cross multiply
    28,380.48x = 42,568.04 × 13,384.12
  4. Step 4: Simplify right side
    28,380.48x = 569,735,755.52
  5. Step 5: Solve for x
    x = 569,735,755.52/28,380.48
  6. Step 6: Final answer
    x = 20,074.92

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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.