Home / 28,211.84-38,930.24-15,462.98

Finding the Fourth Proportional to 28,211.84, 38,930.24 and 15,462.98

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Solution

The fourth proportional to 28,211.84, 38,930.24 and 15,462.98 is: 21,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.84 : 38,930.24 = 15,462.98 : x
  2. Step 2: Convert to fraction form
    28,211.84/38,930.24 = 15,462.98/x
  3. Step 3: Cross multiply
    28,211.84x = 38,930.24 × 15,462.98
  4. Step 4: Simplify right side
    28,211.84x = 601,977,522.52
  5. Step 5: Solve for x
    x = 601,977,522.52/28,211.84
  6. Step 6: Final answer
    x = 21,337.76

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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.