Home / 20,158.58-27,818.29-11,205.86

Finding the Fourth Proportional to 20,158.58, 27,818.29 and 11,205.86

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Solution

The fourth proportional to 20,158.58, 27,818.29 and 11,205.86 is: 15,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.58 : 27,818.29 = 11,205.86 : x
  2. Step 2: Convert to fraction form
    20,158.58/27,818.29 = 11,205.86/x
  3. Step 3: Cross multiply
    20,158.58x = 27,818.29 × 11,205.86
  4. Step 4: Simplify right side
    20,158.58x = 311,727,738.10
  5. Step 5: Solve for x
    x = 311,727,738.10/20,158.58
  6. Step 6: Final answer
    x = 15,463.77

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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.