Home / 10,456.20-15,684.30-5,191.02

Finding the Fourth Proportional to 10,456.20, 15,684.30 and 5,191.02

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Solution

The fourth proportional to 10,456.20, 15,684.30 and 5,191.02 is: 7,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.20 : 15,684.30 = 5,191.02 : x
  2. Step 2: Convert to fraction form
    10,456.20/15,684.30 = 5,191.02/x
  3. Step 3: Cross multiply
    10,456.20x = 15,684.30 × 5,191.02
  4. Step 4: Simplify right side
    10,456.20x = 81,417,514.99
  5. Step 5: Solve for x
    x = 81,417,514.99/10,456.20
  6. Step 6: Final answer
    x = 7,786.53

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1.5x scale

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.