Home / 20,924.24-31,510.09-15,121.40

Finding the Fourth Proportional to 20,924.24, 31,510.09 and 15,121.40

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Solution

The fourth proportional to 20,924.24, 31,510.09 and 15,121.40 is: 22,771.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.24 : 31,510.09 = 15,121.40 : x
  2. Step 2: Convert to fraction form
    20,924.24/31,510.09 = 15,121.40/x
  3. Step 3: Cross multiply
    20,924.24x = 31,510.09 × 15,121.40
  4. Step 4: Simplify right side
    20,924.24x = 476,476,536.28
  5. Step 5: Solve for x
    x = 476,476,536.28/20,924.24
  6. Step 6: Final answer
    x = 22,771.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.