Home / 12,853.80-19,280.70-6,998.13

Finding the Fourth Proportional to 12,853.80, 19,280.70 and 6,998.13

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Solution

The fourth proportional to 12,853.80, 19,280.70 and 6,998.13 is: 10,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.80 : 19,280.70 = 6,998.13 : x
  2. Step 2: Convert to fraction form
    12,853.80/19,280.70 = 6,998.13/x
  3. Step 3: Cross multiply
    12,853.80x = 19,280.70 × 6,998.13
  4. Step 4: Simplify right side
    12,853.80x = 134,928,845.09
  5. Step 5: Solve for x
    x = 134,928,845.09/12,853.80
  6. Step 6: Final answer
    x = 10,497.20

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Half scale
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Double scale
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Similar ratio
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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.