Home / 15,729.48-21,706.83-8,656.04

Finding the Fourth Proportional to 15,729.48, 21,706.83 and 8,656.04

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Solution

The fourth proportional to 15,729.48, 21,706.83 and 8,656.04 is: 11,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.48 : 21,706.83 = 8,656.04 : x
  2. Step 2: Convert to fraction form
    15,729.48/21,706.83 = 8,656.04/x
  3. Step 3: Cross multiply
    15,729.48x = 21,706.83 × 8,656.04
  4. Step 4: Simplify right side
    15,729.48x = 187,895,243.02
  5. Step 5: Solve for x
    x = 187,895,243.02/15,729.48
  6. Step 6: Final answer
    x = 11,945.42

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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.