Home / 20,290.92-28,000.47-11,336.64

Finding the Fourth Proportional to 20,290.92, 28,000.47 and 11,336.64

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Solution

The fourth proportional to 20,290.92, 28,000.47 and 11,336.64 is: 15,644.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.92 : 28,000.47 = 11,336.64 : x
  2. Step 2: Convert to fraction form
    20,290.92/28,000.47 = 11,336.64/x
  3. Step 3: Cross multiply
    20,290.92x = 28,000.47 × 11,336.64
  4. Step 4: Simplify right side
    20,290.92x = 317,431,248.22
  5. Step 5: Solve for x
    x = 317,431,248.22/20,290.92
  6. Step 6: Final answer
    x = 15,644.00

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1.5x scale

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.