Home / 28,153.47-38,850.50-16,218.53

Finding the Fourth Proportional to 28,153.47, 38,850.50 and 16,218.53

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Solution

The fourth proportional to 28,153.47, 38,850.50 and 16,218.53 is: 22,380.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.47 : 38,850.50 = 16,218.53 : x
  2. Step 2: Convert to fraction form
    28,153.47/38,850.50 = 16,218.53/x
  3. Step 3: Cross multiply
    28,153.47x = 38,850.50 × 16,218.53
  4. Step 4: Simplify right side
    28,153.47x = 630,097,724.42
  5. Step 5: Solve for x
    x = 630,097,724.42/28,153.47
  6. Step 6: Final answer
    x = 22,380.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.