Home / 11,315.17-15,613.05-6,278.59

Finding the Fourth Proportional to 11,315.17, 15,613.05 and 6,278.59

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Solution

The fourth proportional to 11,315.17, 15,613.05 and 6,278.59 is: 8,663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.17 : 15,613.05 = 6,278.59 : x
  2. Step 2: Convert to fraction form
    11,315.17/15,613.05 = 6,278.59/x
  3. Step 3: Cross multiply
    11,315.17x = 15,613.05 × 6,278.59
  4. Step 4: Simplify right side
    11,315.17x = 98,027,939.60
  5. Step 5: Solve for x
    x = 98,027,939.60/11,315.17
  6. Step 6: Final answer
    x = 8,663.41

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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.