Home / 20,548.64-28,357.08-11,117.20

Finding the Fourth Proportional to 20,548.64, 28,357.08 and 11,117.20

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Solution

The fourth proportional to 20,548.64, 28,357.08 and 11,117.20 is: 15,341.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.64 : 28,357.08 = 11,117.20 : x
  2. Step 2: Convert to fraction form
    20,548.64/28,357.08 = 11,117.20/x
  3. Step 3: Cross multiply
    20,548.64x = 28,357.08 × 11,117.20
  4. Step 4: Simplify right side
    20,548.64x = 315,251,329.78
  5. Step 5: Solve for x
    x = 315,251,329.78/20,548.64
  6. Step 6: Final answer
    x = 15,341.71

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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.