Home / 15,740.70-21,722.16-8,666.94

Finding the Fourth Proportional to 15,740.70, 21,722.16 and 8,666.94

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Solution

The fourth proportional to 15,740.70, 21,722.16 and 8,666.94 is: 11,960.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.70 : 21,722.16 = 8,666.94 : x
  2. Step 2: Convert to fraction form
    15,740.70/21,722.16 = 8,666.94/x
  3. Step 3: Cross multiply
    15,740.70x = 21,722.16 × 8,666.94
  4. Step 4: Simplify right side
    15,740.70x = 188,264,657.39
  5. Step 5: Solve for x
    x = 188,264,657.39/15,740.70
  6. Step 6: Final answer
    x = 11,960.37

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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.