Home / 21,275.62-29,360.11-11,715.31

Finding the Fourth Proportional to 21,275.62, 29,360.11 and 11,715.31

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Solution

The fourth proportional to 21,275.62, 29,360.11 and 11,715.31 is: 16,166.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.62 : 29,360.11 = 11,715.31 : x
  2. Step 2: Convert to fraction form
    21,275.62/29,360.11 = 11,715.31/x
  3. Step 3: Cross multiply
    21,275.62x = 29,360.11 × 11,715.31
  4. Step 4: Simplify right side
    21,275.62x = 343,962,628.93
  5. Step 5: Solve for x
    x = 343,962,628.93/21,275.62
  6. Step 6: Final answer
    x = 16,166.99

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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.