Home / 15,184.81-20,954.08-8,470.87

Finding the Fourth Proportional to 15,184.81, 20,954.08 and 8,470.87

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Solution

The fourth proportional to 15,184.81, 20,954.08 and 8,470.87 is: 11,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.81 : 20,954.08 = 8,470.87 : x
  2. Step 2: Convert to fraction form
    15,184.81/20,954.08 = 8,470.87/x
  3. Step 3: Cross multiply
    15,184.81x = 20,954.08 × 8,470.87
  4. Step 4: Simplify right side
    15,184.81x = 177,499,214.09
  5. Step 5: Solve for x
    x = 177,499,214.09/15,184.81
  6. Step 6: Final answer
    x = 11,689.26

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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.