Home / 10,687.11-14,748.20-6,440.63

Finding the Fourth Proportional to 10,687.11, 14,748.20 and 6,440.63

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Solution

The fourth proportional to 10,687.11, 14,748.20 and 6,440.63 is: 8,888.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.11 : 14,748.20 = 6,440.63 : x
  2. Step 2: Convert to fraction form
    10,687.11/14,748.20 = 6,440.63/x
  3. Step 3: Cross multiply
    10,687.11x = 14,748.20 × 6,440.63
  4. Step 4: Simplify right side
    10,687.11x = 94,987,593.42
  5. Step 5: Solve for x
    x = 94,987,593.42/10,687.11
  6. Step 6: Final answer
    x = 8,888.05

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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.