Home / 14,487.80-21,731.70-9,879.80

Finding the Fourth Proportional to 14,487.80, 21,731.70 and 9,879.80

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Solution

The fourth proportional to 14,487.80, 21,731.70 and 9,879.80 is: 14,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.80 : 21,731.70 = 9,879.80 : x
  2. Step 2: Convert to fraction form
    14,487.80/21,731.70 = 9,879.80/x
  3. Step 3: Cross multiply
    14,487.80x = 21,731.70 × 9,879.80
  4. Step 4: Simplify right side
    14,487.80x = 214,704,849.66
  5. Step 5: Solve for x
    x = 214,704,849.66/14,487.80
  6. Step 6: Final answer
    x = 14,819.70

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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.