Home / 10,899.12-15,039.76-6,651.42

Finding the Fourth Proportional to 10,899.12, 15,039.76 and 6,651.42

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Solution

The fourth proportional to 10,899.12, 15,039.76 and 6,651.42 is: 9,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.12 : 15,039.76 = 6,651.42 : x
  2. Step 2: Convert to fraction form
    10,899.12/15,039.76 = 6,651.42/x
  3. Step 3: Cross multiply
    10,899.12x = 15,039.76 × 6,651.42
  4. Step 4: Simplify right side
    10,899.12x = 100,035,760.46
  5. Step 5: Solve for x
    x = 100,035,760.46/10,899.12
  6. Step 6: Final answer
    x = 9,178.33

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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.