Home / 20,359.60-28,096.08-11,407.18

Finding the Fourth Proportional to 20,359.60, 28,096.08 and 11,407.18

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Solution

The fourth proportional to 20,359.60, 28,096.08 and 11,407.18 is: 15,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.60 : 28,096.08 = 11,407.18 : x
  2. Step 2: Convert to fraction form
    20,359.60/28,096.08 = 11,407.18/x
  3. Step 3: Cross multiply
    20,359.60x = 28,096.08 × 11,407.18
  4. Step 4: Simplify right side
    20,359.60x = 320,497,041.85
  5. Step 5: Solve for x
    x = 320,497,041.85/20,359.60
  6. Step 6: Final answer
    x = 15,741.81

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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.