Home / 15,360.72-21,198.48-8,646.78

Finding the Fourth Proportional to 15,360.72, 21,198.48 and 8,646.78

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Solution

The fourth proportional to 15,360.72, 21,198.48 and 8,646.78 is: 11,932.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.72 : 21,198.48 = 8,646.78 : x
  2. Step 2: Convert to fraction form
    15,360.72/21,198.48 = 8,646.78/x
  3. Step 3: Cross multiply
    15,360.72x = 21,198.48 × 8,646.78
  4. Step 4: Simplify right side
    15,360.72x = 183,298,592.89
  5. Step 5: Solve for x
    x = 183,298,592.89/15,360.72
  6. Step 6: Final answer
    x = 11,932.94

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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.