Home / 15,725.26-21,701.25-8,555.57

Finding the Fourth Proportional to 15,725.26, 21,701.25 and 8,555.57

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Solution

The fourth proportional to 15,725.26, 21,701.25 and 8,555.57 is: 11,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.26 : 21,701.25 = 8,555.57 : x
  2. Step 2: Convert to fraction form
    15,725.26/21,701.25 = 8,555.57/x
  3. Step 3: Cross multiply
    15,725.26x = 21,701.25 × 8,555.57
  4. Step 4: Simplify right side
    15,725.26x = 185,666,563.46
  5. Step 5: Solve for x
    x = 185,666,563.46/15,725.26
  6. Step 6: Final answer
    x = 11,806.90

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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.