Home / 10,531.88-15,802.43-4,989.18

Finding the Fourth Proportional to 10,531.88, 15,802.43 and 4,989.18

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Solution

The fourth proportional to 10,531.88, 15,802.43 and 4,989.18 is: 7,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.88 : 15,802.43 = 4,989.18 : x
  2. Step 2: Convert to fraction form
    10,531.88/15,802.43 = 4,989.18/x
  3. Step 3: Cross multiply
    10,531.88x = 15,802.43 × 4,989.18
  4. Step 4: Simplify right side
    10,531.88x = 78,841,142.76
  5. Step 5: Solve for x
    x = 78,841,142.76/10,531.88
  6. Step 6: Final answer
    x = 7,485.96

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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.