Home / 15,016.05-20,722.73-9,971.55

Finding the Fourth Proportional to 15,016.05, 20,722.73 and 9,971.55

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Solution

The fourth proportional to 15,016.05, 20,722.73 and 9,971.55 is: 13,761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.05 : 20,722.73 = 9,971.55 : x
  2. Step 2: Convert to fraction form
    15,016.05/20,722.73 = 9,971.55/x
  3. Step 3: Cross multiply
    15,016.05x = 20,722.73 × 9,971.55
  4. Step 4: Simplify right side
    15,016.05x = 206,637,688.47
  5. Step 5: Solve for x
    x = 206,637,688.47/15,016.05
  6. Step 6: Final answer
    x = 13,761.12

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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.