Home / 20,608.86-28,439.88-11,656.02

Finding the Fourth Proportional to 20,608.86, 28,439.88 and 11,656.02

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Solution

The fourth proportional to 20,608.86, 28,439.88 and 11,656.02 is: 16,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.86 : 28,439.88 = 11,656.02 : x
  2. Step 2: Convert to fraction form
    20,608.86/28,439.88 = 11,656.02/x
  3. Step 3: Cross multiply
    20,608.86x = 28,439.88 × 11,656.02
  4. Step 4: Simplify right side
    20,608.86x = 331,495,810.08
  5. Step 5: Solve for x
    x = 331,495,810.08/20,608.86
  6. Step 6: Final answer
    x = 16,085.11

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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.