Home / 11,031.24-15,222.84-6,315.12

Finding the Fourth Proportional to 11,031.24, 15,222.84 and 6,315.12

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Solution

The fourth proportional to 11,031.24, 15,222.84 and 6,315.12 is: 8,714.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.24 : 15,222.84 = 6,315.12 : x
  2. Step 2: Convert to fraction form
    11,031.24/15,222.84 = 6,315.12/x
  3. Step 3: Cross multiply
    11,031.24x = 15,222.84 × 6,315.12
  4. Step 4: Simplify right side
    11,031.24x = 96,134,061.34
  5. Step 5: Solve for x
    x = 96,134,061.34/11,031.24
  6. Step 6: Final answer
    x = 8,714.71

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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.