Home / 12,998.20-19,497.30-8,073.40

Finding the Fourth Proportional to 12,998.20, 19,497.30 and 8,073.40

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Solution

The fourth proportional to 12,998.20, 19,497.30 and 8,073.40 is: 12,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.20 : 19,497.30 = 8,073.40 : x
  2. Step 2: Convert to fraction form
    12,998.20/19,497.30 = 8,073.40/x
  3. Step 3: Cross multiply
    12,998.20x = 19,497.30 × 8,073.40
  4. Step 4: Simplify right side
    12,998.20x = 157,409,501.82
  5. Step 5: Solve for x
    x = 157,409,501.82/12,998.20
  6. Step 6: Final answer
    x = 12,110.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.