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Finding the Fourth Proportional to 28,043, 38,699.38 and 15,468.60

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Solution

The fourth proportional to 28,043, 38,699.38 and 15,468.60 is: 21,346.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043 : 38,699.38 = 15,468.60 : x
  2. Step 2: Convert to fraction form
    28,043/38,699.38 = 15,468.60/x
  3. Step 3: Cross multiply
    28,043x = 38,699.38 × 15,468.60
  4. Step 4: Simplify right side
    28,043x = 598,625,229.47
  5. Step 5: Solve for x
    x = 598,625,229.47/28,043
  6. Step 6: Final answer
    x = 21,346.69

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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.