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Finding the Fourth Proportional to 12,358.68, 18,535.78 and 6,116.68

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Solution

The fourth proportional to 12,358.68, 18,535.78 and 6,116.68 is: 9,173.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.68 : 18,535.78 = 6,116.68 : x
  2. Step 2: Convert to fraction form
    12,358.68/18,535.78 = 6,116.68/x
  3. Step 3: Cross multiply
    12,358.68x = 18,535.78 × 6,116.68
  4. Step 4: Simplify right side
    12,358.68x = 113,377,434.81
  5. Step 5: Solve for x
    x = 113,377,434.81/12,358.68
  6. Step 6: Final answer
    x = 9,173.91

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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.