Home / 14,109.34-21,161.97-9,879.76

Finding the Fourth Proportional to 14,109.34, 21,161.97 and 9,879.76

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Solution

The fourth proportional to 14,109.34, 21,161.97 and 9,879.76 is: 14,818.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.34 : 21,161.97 = 9,879.76 : x
  2. Step 2: Convert to fraction form
    14,109.34/21,161.97 = 9,879.76/x
  3. Step 3: Cross multiply
    14,109.34x = 21,161.97 × 9,879.76
  4. Step 4: Simplify right side
    14,109.34x = 209,075,184.73
  5. Step 5: Solve for x
    x = 209,075,184.73/14,109.34
  6. Step 6: Final answer
    x = 14,818.21

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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.