Home / 10,839.40-16,248.30-4,985.80

Finding the Fourth Proportional to 10,839.40, 16,248.30 and 4,985.80

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Solution

The fourth proportional to 10,839.40, 16,248.30 and 4,985.80 is: 7,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,839.40 : 16,248.30 = 4,985.80 : x
  2. Step 2: Convert to fraction form
    10,839.40/16,248.30 = 4,985.80/x
  3. Step 3: Cross multiply
    10,839.40x = 16,248.30 × 4,985.80
  4. Step 4: Simplify right side
    10,839.40x = 81,010,774.14
  5. Step 5: Solve for x
    x = 81,010,774.14/10,839.40
  6. Step 6: Final answer
    x = 7,473.73

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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.