Home / 28,134.55-38,872.47-22,211.56

Finding the Fourth Proportional to 28,134.55, 38,872.47 and 22,211.56

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Solution

The fourth proportional to 28,134.55, 38,872.47 and 22,211.56 is: 30,688.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.55 : 38,872.47 = 22,211.56 : x
  2. Step 2: Convert to fraction form
    28,134.55/38,872.47 = 22,211.56/x
  3. Step 3: Cross multiply
    28,134.55x = 38,872.47 × 22,211.56
  4. Step 4: Simplify right side
    28,134.55x = 863,418,199.75
  5. Step 5: Solve for x
    x = 863,418,199.75/28,134.55
  6. Step 6: Final answer
    x = 30,688.89

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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.