Home / 20,585.05-28,407.46-11,153.62

Finding the Fourth Proportional to 20,585.05, 28,407.46 and 11,153.62

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Solution

The fourth proportional to 20,585.05, 28,407.46 and 11,153.62 is: 15,392.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.05 : 28,407.46 = 11,153.62 : x
  2. Step 2: Convert to fraction form
    20,585.05/28,407.46 = 11,153.62/x
  3. Step 3: Cross multiply
    20,585.05x = 28,407.46 × 11,153.62
  4. Step 4: Simplify right side
    20,585.05x = 316,846,014.01
  5. Step 5: Solve for x
    x = 316,846,014.01/20,585.05
  6. Step 6: Final answer
    x = 15,392.04

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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.