Home / 15,325.96-21,149.34-8,613.28

Finding the Fourth Proportional to 15,325.96, 21,149.34 and 8,613.28

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Solution

The fourth proportional to 15,325.96, 21,149.34 and 8,613.28 is: 11,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,325.96 : 21,149.34 = 8,613.28 : x
  2. Step 2: Convert to fraction form
    15,325.96/21,149.34 = 8,613.28/x
  3. Step 3: Cross multiply
    15,325.96x = 21,149.34 × 8,613.28
  4. Step 4: Simplify right side
    15,325.96x = 182,165,187.24
  5. Step 5: Solve for x
    x = 182,165,187.24/15,325.96
  6. Step 6: Final answer
    x = 11,886.05

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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.