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Finding the Fourth Proportional to 10,964.04, 15,129.63 and 6,486.63

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Solution

The fourth proportional to 10,964.04, 15,129.63 and 6,486.63 is: 8,951.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,964.04 : 15,129.63 = 6,486.63 : x
  2. Step 2: Convert to fraction form
    10,964.04/15,129.63 = 6,486.63/x
  3. Step 3: Cross multiply
    10,964.04x = 15,129.63 × 6,486.63
  4. Step 4: Simplify right side
    10,964.04x = 98,140,311.85
  5. Step 5: Solve for x
    x = 98,140,311.85/10,964.04
  6. Step 6: Final answer
    x = 8,951.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.