Home / 15,085.18-20,817.12-8,370.82

Finding the Fourth Proportional to 15,085.18, 20,817.12 and 8,370.82

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Solution

The fourth proportional to 15,085.18, 20,817.12 and 8,370.82 is: 11,551.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.18 : 20,817.12 = 8,370.82 : x
  2. Step 2: Convert to fraction form
    15,085.18/20,817.12 = 8,370.82/x
  3. Step 3: Cross multiply
    15,085.18x = 20,817.12 × 8,370.82
  4. Step 4: Simplify right side
    15,085.18x = 174,256,364.44
  5. Step 5: Solve for x
    x = 174,256,364.44/15,085.18
  6. Step 6: Final answer
    x = 11,551.49

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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.