Home / 10,261.23-15,385.70-4,985.85

Finding the Fourth Proportional to 10,261.23, 15,385.70 and 4,985.85

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Solution

The fourth proportional to 10,261.23, 15,385.70 and 4,985.85 is: 7,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,261.23 : 15,385.70 = 4,985.85 : x
  2. Step 2: Convert to fraction form
    10,261.23/15,385.70 = 4,985.85/x
  3. Step 3: Cross multiply
    10,261.23x = 15,385.70 × 4,985.85
  4. Step 4: Simplify right side
    10,261.23x = 76,710,834.46
  5. Step 5: Solve for x
    x = 76,710,834.46/10,261.23
  6. Step 6: Final answer
    x = 7,475.79

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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.