Home / 18,641.49-25,725.77-10,143.69

Finding the Fourth Proportional to 18,641.49, 25,725.77 and 10,143.69

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Solution

The fourth proportional to 18,641.49, 25,725.77 and 10,143.69 is: 13,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.49 : 25,725.77 = 10,143.69 : x
  2. Step 2: Convert to fraction form
    18,641.49/25,725.77 = 10,143.69/x
  3. Step 3: Cross multiply
    18,641.49x = 25,725.77 × 10,143.69
  4. Step 4: Simplify right side
    18,641.49x = 260,954,235.89
  5. Step 5: Solve for x
    x = 260,954,235.89/18,641.49
  6. Step 6: Final answer
    x = 13,998.57

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