Home / 15,360.40-21,195.87-8,645.92

Finding the Fourth Proportional to 15,360.40, 21,195.87 and 8,645.92

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Solution

The fourth proportional to 15,360.40, 21,195.87 and 8,645.92 is: 11,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.40 : 21,195.87 = 8,645.92 : x
  2. Step 2: Convert to fraction form
    15,360.40/21,195.87 = 8,645.92/x
  3. Step 3: Cross multiply
    15,360.40x = 21,195.87 × 8,645.92
  4. Step 4: Simplify right side
    15,360.40x = 183,257,796.35
  5. Step 5: Solve for x
    x = 183,257,796.35/15,360.40
  6. Step 6: Final answer
    x = 11,930.54

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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.