Home / 15,740.57-21,722.27-8,666.97

Finding the Fourth Proportional to 15,740.57, 21,722.27 and 8,666.97

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Solution

The fourth proportional to 15,740.57, 21,722.27 and 8,666.97 is: 11,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.57 : 21,722.27 = 8,666.97 : x
  2. Step 2: Convert to fraction form
    15,740.57/21,722.27 = 8,666.97/x
  3. Step 3: Cross multiply
    15,740.57x = 21,722.27 × 8,666.97
  4. Step 4: Simplify right side
    15,740.57x = 188,266,219.09
  5. Step 5: Solve for x
    x = 188,266,219.09/15,740.57
  6. Step 6: Final answer
    x = 11,960.58

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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.