Home / 15,417.30-21,275.82-8,343.72

Finding the Fourth Proportional to 15,417.30, 21,275.82 and 8,343.72

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Solution

The fourth proportional to 15,417.30, 21,275.82 and 8,343.72 is: 11,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.30 : 21,275.82 = 8,343.72 : x
  2. Step 2: Convert to fraction form
    15,417.30/21,275.82 = 8,343.72/x
  3. Step 3: Cross multiply
    15,417.30x = 21,275.82 × 8,343.72
  4. Step 4: Simplify right side
    15,417.30x = 177,519,484.85
  5. Step 5: Solve for x
    x = 177,519,484.85/15,417.30
  6. Step 6: Final answer
    x = 11,514.30

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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.