Home / 15,085.42-20,818.26-8,371.34

Finding the Fourth Proportional to 15,085.42, 20,818.26 and 8,371.34

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Solution

The fourth proportional to 15,085.42, 20,818.26 and 8,371.34 is: 11,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.42 : 20,818.26 = 8,371.34 : x
  2. Step 2: Convert to fraction form
    15,085.42/20,818.26 = 8,371.34/x
  3. Step 3: Cross multiply
    15,085.42x = 20,818.26 × 8,371.34
  4. Step 4: Simplify right side
    15,085.42x = 174,276,732.67
  5. Step 5: Solve for x
    x = 174,276,732.67/15,085.42
  6. Step 6: Final answer
    x = 11,552.66

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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.