Home / 10,254.11-15,354.53-8,782.79

Finding the Fourth Proportional to 10,254.11, 15,354.53 and 8,782.79

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Solution

The fourth proportional to 10,254.11, 15,354.53 and 8,782.79 is: 13,151.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,254.11 : 15,354.53 = 8,782.79 : x
  2. Step 2: Convert to fraction form
    10,254.11/15,354.53 = 8,782.79/x
  3. Step 3: Cross multiply
    10,254.11x = 15,354.53 × 8,782.79
  4. Step 4: Simplify right side
    10,254.11x = 134,855,491.85
  5. Step 5: Solve for x
    x = 134,855,491.85/10,254.11
  6. Step 6: Final answer
    x = 13,151.37

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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.