Home / 20,541.52-28,354.56-12,158

Finding the Fourth Proportional to 20,541.52, 28,354.56 and 12,158

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Solution

The fourth proportional to 20,541.52, 28,354.56 and 12,158 is: 16,782.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.52 : 28,354.56 = 12,158 : x
  2. Step 2: Convert to fraction form
    20,541.52/28,354.56 = 12,158/x
  3. Step 3: Cross multiply
    20,541.52x = 28,354.56 × 12,158
  4. Step 4: Simplify right side
    20,541.52x = 344,734,740.48
  5. Step 5: Solve for x
    x = 344,734,740.48/20,541.52
  6. Step 6: Final answer
    x = 16,782.34

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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.