Home / 15,015.72-20,722.27-9,971.24

Finding the Fourth Proportional to 15,015.72, 20,722.27 and 9,971.24

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Solution

The fourth proportional to 15,015.72, 20,722.27 and 9,971.24 is: 13,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.72 : 20,722.27 = 9,971.24 : x
  2. Step 2: Convert to fraction form
    15,015.72/20,722.27 = 9,971.24/x
  3. Step 3: Cross multiply
    15,015.72x = 20,722.27 × 9,971.24
  4. Step 4: Simplify right side
    15,015.72x = 206,626,700.64
  5. Step 5: Solve for x
    x = 206,626,700.64/15,015.72
  6. Step 6: Final answer
    x = 13,760.70

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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.