Home / 15,112.28-20,852.43-8,739.47

Finding the Fourth Proportional to 15,112.28, 20,852.43 and 8,739.47

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Solution

The fourth proportional to 15,112.28, 20,852.43 and 8,739.47 is: 12,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.28 : 20,852.43 = 8,739.47 : x
  2. Step 2: Convert to fraction form
    15,112.28/20,852.43 = 8,739.47/x
  3. Step 3: Cross multiply
    15,112.28x = 20,852.43 × 8,739.47
  4. Step 4: Simplify right side
    15,112.28x = 182,239,082.15
  5. Step 5: Solve for x
    x = 182,239,082.15/15,112.28
  6. Step 6: Final answer
    x = 12,059.01

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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.