Home / 13,431.48-18,535.39-8,124.76

Finding the Fourth Proportional to 13,431.48, 18,535.39 and 8,124.76

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Solution

The fourth proportional to 13,431.48, 18,535.39 and 8,124.76 is: 11,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.48 : 18,535.39 = 8,124.76 : x
  2. Step 2: Convert to fraction form
    13,431.48/18,535.39 = 8,124.76/x
  3. Step 3: Cross multiply
    13,431.48x = 18,535.39 × 8,124.76
  4. Step 4: Simplify right side
    13,431.48x = 150,595,595.26
  5. Step 5: Solve for x
    x = 150,595,595.26/13,431.48
  6. Step 6: Final answer
    x = 11,212.14

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Half scale
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Double scale
Find fourth proportional to 13,432.48, 18,536.77 and 8,125.76
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.