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Finding the Fourth Proportional to 28,945.40, 43,393.80 and 15,094.40

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Solution

The fourth proportional to 28,945.40, 43,393.80 and 15,094.40 is: 22,628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.40 : 43,393.80 = 15,094.40 : x
  2. Step 2: Convert to fraction form
    28,945.40/43,393.80 = 15,094.40/x
  3. Step 3: Cross multiply
    28,945.40x = 43,393.80 × 15,094.40
  4. Step 4: Simplify right side
    28,945.40x = 655,003,374.72
  5. Step 5: Solve for x
    x = 655,003,374.72/28,945.40
  6. Step 6: Final answer
    x = 22,628.93

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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.