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Finding the Fourth Proportional to 27,699.60, 38,228.70 and 15,600.48

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Solution

The fourth proportional to 27,699.60, 38,228.70 and 15,600.48 is: 21,530.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,699.60 : 38,228.70 = 15,600.48 : x
  2. Step 2: Convert to fraction form
    27,699.60/38,228.70 = 15,600.48/x
  3. Step 3: Cross multiply
    27,699.60x = 38,228.70 × 15,600.48
  4. Step 4: Simplify right side
    27,699.60x = 596,386,069.78
  5. Step 5: Solve for x
    x = 596,386,069.78/27,699.60
  6. Step 6: Final answer
    x = 21,530.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.