Home / 20,764.64-28,655.82-11,810.49

Finding the Fourth Proportional to 20,764.64, 28,655.82 and 11,810.49

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Solution

The fourth proportional to 20,764.64, 28,655.82 and 11,810.49 is: 16,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.64 : 28,655.82 = 11,810.49 : x
  2. Step 2: Convert to fraction form
    20,764.64/28,655.82 = 11,810.49/x
  3. Step 3: Cross multiply
    20,764.64x = 28,655.82 × 11,810.49
  4. Step 4: Simplify right side
    20,764.64x = 338,439,275.55
  5. Step 5: Solve for x
    x = 338,439,275.55/20,764.64
  6. Step 6: Final answer
    x = 16,298.83

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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.