Home / 18,611.36-25,683.76-10,228.40

Finding the Fourth Proportional to 18,611.36, 25,683.76 and 10,228.40

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Solution

The fourth proportional to 18,611.36, 25,683.76 and 10,228.40 is: 14,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.36 : 25,683.76 = 10,228.40 : x
  2. Step 2: Convert to fraction form
    18,611.36/25,683.76 = 10,228.40/x
  3. Step 3: Cross multiply
    18,611.36x = 25,683.76 × 10,228.40
  4. Step 4: Simplify right side
    18,611.36x = 262,703,770.78
  5. Step 5: Solve for x
    x = 262,703,770.78/18,611.36
  6. Step 6: Final answer
    x = 14,115.24

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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.