Home / 14,400.40-19,872.40-8,112.76

Finding the Fourth Proportional to 14,400.40, 19,872.40 and 8,112.76

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Solution

The fourth proportional to 14,400.40, 19,872.40 and 8,112.76 is: 11,195.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.40 : 19,872.40 = 8,112.76 : x
  2. Step 2: Convert to fraction form
    14,400.40/19,872.40 = 8,112.76/x
  3. Step 3: Cross multiply
    14,400.40x = 19,872.40 × 8,112.76
  4. Step 4: Simplify right side
    14,400.40x = 161,220,011.82
  5. Step 5: Solve for x
    x = 161,220,011.82/14,400.40
  6. Step 6: Final answer
    x = 11,195.52

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Half scale
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Double scale
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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.