Home / 21,595.50-29,811.78-15,227.28

Finding the Fourth Proportional to 21,595.50, 29,811.78 and 15,227.28

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Solution

The fourth proportional to 21,595.50, 29,811.78 and 15,227.28 is: 21,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.50 : 29,811.78 = 15,227.28 : x
  2. Step 2: Convert to fraction form
    21,595.50/29,811.78 = 15,227.28/x
  3. Step 3: Cross multiply
    21,595.50x = 29,811.78 × 15,227.28
  4. Step 4: Simplify right side
    21,595.50x = 453,952,321.36
  5. Step 5: Solve for x
    x = 453,952,321.36/21,595.50
  6. Step 6: Final answer
    x = 21,020.69

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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.