Home / 38,928.76-53,721.69-21,023.77

Finding the Fourth Proportional to 38,928.76, 53,721.69 and 21,023.77

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Solution

The fourth proportional to 38,928.76, 53,721.69 and 21,023.77 is: 29,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.76 : 53,721.69 = 21,023.77 : x
  2. Step 2: Convert to fraction form
    38,928.76/53,721.69 = 21,023.77/x
  3. Step 3: Cross multiply
    38,928.76x = 53,721.69 × 21,023.77
  4. Step 4: Simplify right side
    38,928.76x = 1,129,432,454.57
  5. Step 5: Solve for x
    x = 1,129,432,454.57/38,928.76
  6. Step 6: Final answer
    x = 29,012.80

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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.