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Finding the Fourth Proportional to 28,734.34, 43,009.14 and 15,373.98

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Solution

The fourth proportional to 28,734.34, 43,009.14 and 15,373.98 is: 23,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,734.34 : 43,009.14 = 15,373.98 : x
  2. Step 2: Convert to fraction form
    28,734.34/43,009.14 = 15,373.98/x
  3. Step 3: Cross multiply
    28,734.34x = 43,009.14 × 15,373.98
  4. Step 4: Simplify right side
    28,734.34x = 661,221,658.18
  5. Step 5: Solve for x
    x = 661,221,658.18/28,734.34
  6. Step 6: Final answer
    x = 23,011.55

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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.