Home / 10,085.76-15,117.60-8,620.44

Finding the Fourth Proportional to 10,085.76, 15,117.60 and 8,620.44

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Solution

The fourth proportional to 10,085.76, 15,117.60 and 8,620.44 is: 12,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.76 : 15,117.60 = 8,620.44 : x
  2. Step 2: Convert to fraction form
    10,085.76/15,117.60 = 8,620.44/x
  3. Step 3: Cross multiply
    10,085.76x = 15,117.60 × 8,620.44
  4. Step 4: Simplify right side
    10,085.76x = 130,320,363.74
  5. Step 5: Solve for x
    x = 130,320,363.74/10,085.76
  6. Step 6: Final answer
    x = 12,921.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.