Home / 15,519.66-21,417.60-8,446.54

Finding the Fourth Proportional to 15,519.66, 21,417.60 and 8,446.54

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Solution

The fourth proportional to 15,519.66, 21,417.60 and 8,446.54 is: 11,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.66 : 21,417.60 = 8,446.54 : x
  2. Step 2: Convert to fraction form
    15,519.66/21,417.60 = 8,446.54/x
  3. Step 3: Cross multiply
    15,519.66x = 21,417.60 × 8,446.54
  4. Step 4: Simplify right side
    15,519.66x = 180,904,615.10
  5. Step 5: Solve for x
    x = 180,904,615.10/15,519.66
  6. Step 6: Final answer
    x = 11,656.48

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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.