Home / 28,114.29-42,157.53-9,387.90

Finding the Fourth Proportional to 28,114.29, 42,157.53 and 9,387.90

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Solution

The fourth proportional to 28,114.29, 42,157.53 and 9,387.90 is: 14,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.29 : 42,157.53 = 9,387.90 : x
  2. Step 2: Convert to fraction form
    28,114.29/42,157.53 = 9,387.90/x
  3. Step 3: Cross multiply
    28,114.29x = 42,157.53 × 9,387.90
  4. Step 4: Simplify right side
    28,114.29x = 395,770,675.89
  5. Step 5: Solve for x
    x = 395,770,675.89/28,114.29
  6. Step 6: Final answer
    x = 14,077.21

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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.