Home / 15,016.14-20,721.35-8,301.36

Finding the Fourth Proportional to 15,016.14, 20,721.35 and 8,301.36

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Solution

The fourth proportional to 15,016.14, 20,721.35 and 8,301.36 is: 11,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.14 : 20,721.35 = 8,301.36 : x
  2. Step 2: Convert to fraction form
    15,016.14/20,721.35 = 8,301.36/x
  3. Step 3: Cross multiply
    15,016.14x = 20,721.35 × 8,301.36
  4. Step 4: Simplify right side
    15,016.14x = 172,015,484.49
  5. Step 5: Solve for x
    x = 172,015,484.49/15,016.14
  6. Step 6: Final answer
    x = 11,455.37

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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.