Home / 12,865.35-19,330.33-8,187.40

Finding the Fourth Proportional to 12,865.35, 19,330.33 and 8,187.40

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Solution

The fourth proportional to 12,865.35, 19,330.33 and 8,187.40 is: 12,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.35 : 19,330.33 = 8,187.40 : x
  2. Step 2: Convert to fraction form
    12,865.35/19,330.33 = 8,187.40/x
  3. Step 3: Cross multiply
    12,865.35x = 19,330.33 × 8,187.40
  4. Step 4: Simplify right side
    12,865.35x = 158,265,143.84
  5. Step 5: Solve for x
    x = 158,265,143.84/12,865.35
  6. Step 6: Final answer
    x = 12,301.66

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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.