Home / 15,185.66-20,954.76-8,470.76

Finding the Fourth Proportional to 15,185.66, 20,954.76 and 8,470.76

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Solution

The fourth proportional to 15,185.66, 20,954.76 and 8,470.76 is: 11,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.66 : 20,954.76 = 8,470.76 : x
  2. Step 2: Convert to fraction form
    15,185.66/20,954.76 = 8,470.76/x
  3. Step 3: Cross multiply
    15,185.66x = 20,954.76 × 8,470.76
  4. Step 4: Simplify right side
    15,185.66x = 177,502,742.82
  5. Step 5: Solve for x
    x = 177,502,742.82/15,185.66
  6. Step 6: Final answer
    x = 11,688.84

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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.