Home / 20,534.72-28,337.86-11,103.29

Finding the Fourth Proportional to 20,534.72, 28,337.86 and 11,103.29

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Solution

The fourth proportional to 20,534.72, 28,337.86 and 11,103.29 is: 15,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.72 : 28,337.86 = 11,103.29 : x
  2. Step 2: Convert to fraction form
    20,534.72/28,337.86 = 11,103.29/x
  3. Step 3: Cross multiply
    20,534.72x = 28,337.86 × 11,103.29
  4. Step 4: Simplify right side
    20,534.72x = 314,643,308.11
  5. Step 5: Solve for x
    x = 314,643,308.11/20,534.72
  6. Step 6: Final answer
    x = 15,322.50

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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.