Home / 16,820.38-23,212.12-9,368.38

Finding the Fourth Proportional to 16,820.38, 23,212.12 and 9,368.38

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Solution

The fourth proportional to 16,820.38, 23,212.12 and 9,368.38 is: 12,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.38 : 23,212.12 = 9,368.38 : x
  2. Step 2: Convert to fraction form
    16,820.38/23,212.12 = 9,368.38/x
  3. Step 3: Cross multiply
    16,820.38x = 23,212.12 × 9,368.38
  4. Step 4: Simplify right side
    16,820.38x = 217,459,960.77
  5. Step 5: Solve for x
    x = 217,459,960.77/16,820.38
  6. Step 6: Final answer
    x = 12,928.36

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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.