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Finding the Fourth Proportional to 28,773.52, 39,719.76 and 19,347.56

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Solution

The fourth proportional to 28,773.52, 39,719.76 and 19,347.56 is: 26,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773.52 : 39,719.76 = 19,347.56 : x
  2. Step 2: Convert to fraction form
    28,773.52/39,719.76 = 19,347.56/x
  3. Step 3: Cross multiply
    28,773.52x = 39,719.76 × 19,347.56
  4. Step 4: Simplify right side
    28,773.52x = 768,480,439.79
  5. Step 5: Solve for x
    x = 768,480,439.79/28,773.52
  6. Step 6: Final answer
    x = 26,707.91

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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.