Home / 20,774.48-28,658.81-15,100.43

Finding the Fourth Proportional to 20,774.48, 28,658.81 and 15,100.43

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Solution

The fourth proportional to 20,774.48, 28,658.81 and 15,100.43 is: 20,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.48 : 28,658.81 = 15,100.43 : x
  2. Step 2: Convert to fraction form
    20,774.48/28,658.81 = 15,100.43/x
  3. Step 3: Cross multiply
    20,774.48x = 28,658.81 × 15,100.43
  4. Step 4: Simplify right side
    20,774.48x = 432,760,248.75
  5. Step 5: Solve for x
    x = 432,760,248.75/20,774.48
  6. Step 6: Final answer
    x = 20,831.34

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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.