Home / 20,298.64-28,003.38-11,800.12

Finding the Fourth Proportional to 20,298.64, 28,003.38 and 11,800.12

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Solution

The fourth proportional to 20,298.64, 28,003.38 and 11,800.12 is: 16,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.64 : 28,003.38 = 11,800.12 : x
  2. Step 2: Convert to fraction form
    20,298.64/28,003.38 = 11,800.12/x
  3. Step 3: Cross multiply
    20,298.64x = 28,003.38 × 11,800.12
  4. Step 4: Simplify right side
    20,298.64x = 330,443,244.41
  5. Step 5: Solve for x
    x = 330,443,244.41/20,298.64
  6. Step 6: Final answer
    x = 16,279.08

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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.