Home / 10,881.45-16,311.15-4,312.20

Finding the Fourth Proportional to 10,881.45, 16,311.15 and 4,312.20

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Solution

The fourth proportional to 10,881.45, 16,311.15 and 4,312.20 is: 6,463.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.45 : 16,311.15 = 4,312.20 : x
  2. Step 2: Convert to fraction form
    10,881.45/16,311.15 = 4,312.20/x
  3. Step 3: Cross multiply
    10,881.45x = 16,311.15 × 4,312.20
  4. Step 4: Simplify right side
    10,881.45x = 70,336,941.03
  5. Step 5: Solve for x
    x = 70,336,941.03/10,881.45
  6. Step 6: Final answer
    x = 6,463.93

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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.