Home / 28,262.86-38,981.73-19,765.42

Finding the Fourth Proportional to 28,262.86, 38,981.73 and 19,765.42

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Solution

The fourth proportional to 28,262.86, 38,981.73 and 19,765.42 is: 27,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.86 : 38,981.73 = 19,765.42 : x
  2. Step 2: Convert to fraction form
    28,262.86/38,981.73 = 19,765.42/x
  3. Step 3: Cross multiply
    28,262.86x = 38,981.73 × 19,765.42
  4. Step 4: Simplify right side
    28,262.86x = 770,490,265.78
  5. Step 5: Solve for x
    x = 770,490,265.78/28,262.86
  6. Step 6: Final answer
    x = 27,261.58

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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.