Home / 10,531.84-15,799.38-4,990.64

Finding the Fourth Proportional to 10,531.84, 15,799.38 and 4,990.64

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Solution

The fourth proportional to 10,531.84, 15,799.38 and 4,990.64 is: 7,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.84 : 15,799.38 = 4,990.64 : x
  2. Step 2: Convert to fraction form
    10,531.84/15,799.38 = 4,990.64/x
  3. Step 3: Cross multiply
    10,531.84x = 15,799.38 × 4,990.64
  4. Step 4: Simplify right side
    10,531.84x = 78,849,017.80
  5. Step 5: Solve for x
    x = 78,849,017.80/10,531.84
  6. Step 6: Final answer
    x = 7,486.73

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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.