Home / 15,155.02-20,914.57-8,440.65

Finding the Fourth Proportional to 15,155.02, 20,914.57 and 8,440.65

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Solution

The fourth proportional to 15,155.02, 20,914.57 and 8,440.65 is: 11,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.02 : 20,914.57 = 8,440.65 : x
  2. Step 2: Convert to fraction form
    15,155.02/20,914.57 = 8,440.65/x
  3. Step 3: Cross multiply
    15,155.02x = 20,914.57 × 8,440.65
  4. Step 4: Simplify right side
    15,155.02x = 176,532,481.80
  5. Step 5: Solve for x
    x = 176,532,481.80/15,155.02
  6. Step 6: Final answer
    x = 11,648.45

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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.