Home / 20,247.33-27,929.28-15,763.98

Finding the Fourth Proportional to 20,247.33, 27,929.28 and 15,763.98

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Solution

The fourth proportional to 20,247.33, 27,929.28 and 15,763.98 is: 21,744.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.33 : 27,929.28 = 15,763.98 : x
  2. Step 2: Convert to fraction form
    20,247.33/27,929.28 = 15,763.98/x
  3. Step 3: Cross multiply
    20,247.33x = 27,929.28 × 15,763.98
  4. Step 4: Simplify right side
    20,247.33x = 440,276,471.69
  5. Step 5: Solve for x
    x = 440,276,471.69/20,247.33
  6. Step 6: Final answer
    x = 21,744.92

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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.