Home / 14,821.56-20,454.30-8,106.78

Finding the Fourth Proportional to 14,821.56, 20,454.30 and 8,106.78

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Solution

The fourth proportional to 14,821.56, 20,454.30 and 8,106.78 is: 11,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,821.56 : 20,454.30 = 8,106.78 : x
  2. Step 2: Convert to fraction form
    14,821.56/20,454.30 = 8,106.78/x
  3. Step 3: Cross multiply
    14,821.56x = 20,454.30 × 8,106.78
  4. Step 4: Simplify right side
    14,821.56x = 165,818,510.15
  5. Step 5: Solve for x
    x = 165,818,510.15/14,821.56
  6. Step 6: Final answer
    x = 11,187.66

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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.