Home / 14,037.80-21,042.30-8,191.40

Finding the Fourth Proportional to 14,037.80, 21,042.30 and 8,191.40

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Solution

The fourth proportional to 14,037.80, 21,042.30 and 8,191.40 is: 12,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,037.80 : 21,042.30 = 8,191.40 : x
  2. Step 2: Convert to fraction form
    14,037.80/21,042.30 = 8,191.40/x
  3. Step 3: Cross multiply
    14,037.80x = 21,042.30 × 8,191.40
  4. Step 4: Simplify right side
    14,037.80x = 172,365,896.22
  5. Step 5: Solve for x
    x = 172,365,896.22/14,037.80
  6. Step 6: Final answer
    x = 12,278.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.