Home / 15,139.38-20,886.54-11,169.96

Finding the Fourth Proportional to 15,139.38, 20,886.54 and 11,169.96

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Solution

The fourth proportional to 15,139.38, 20,886.54 and 11,169.96 is: 15,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.38 : 20,886.54 = 11,169.96 : x
  2. Step 2: Convert to fraction form
    15,139.38/20,886.54 = 11,169.96/x
  3. Step 3: Cross multiply
    15,139.38x = 20,886.54 × 11,169.96
  4. Step 4: Simplify right side
    15,139.38x = 233,301,816.34
  5. Step 5: Solve for x
    x = 233,301,816.34/15,139.38
  6. Step 6: Final answer
    x = 15,410.26

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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.