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Finding the Fourth Proportional to 28,943.40, 43,390.80 and 15,092.40

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Solution

The fourth proportional to 28,943.40, 43,390.80 and 15,092.40 is: 22,625.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.40 : 43,390.80 = 15,092.40 : x
  2. Step 2: Convert to fraction form
    28,943.40/43,390.80 = 15,092.40/x
  3. Step 3: Cross multiply
    28,943.40x = 43,390.80 × 15,092.40
  4. Step 4: Simplify right side
    28,943.40x = 654,871,309.92
  5. Step 5: Solve for x
    x = 654,871,309.92/28,943.40
  6. Step 6: Final answer
    x = 22,625.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.