Home / 15,721.00-21,685.49-9,672.27

Finding the Fourth Proportional to 15,721.00, 21,685.49 and 9,672.27

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Solution

The fourth proportional to 15,721.00, 21,685.49 and 9,672.27 is: 13,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.00 : 21,685.49 = 9,672.27 : x
  2. Step 2: Convert to fraction form
    15,721.00/21,685.49 = 9,672.27/x
  3. Step 3: Cross multiply
    15,721.00x = 21,685.49 × 9,672.27
  4. Step 4: Simplify right side
    15,721.00x = 209,747,866.00
  5. Step 5: Solve for x
    x = 209,747,866.00/15,721.00
  6. Step 6: Final answer
    x = 13,341.90

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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.