Home / 15,740.01-21,721.37-8,666.69

Finding the Fourth Proportional to 15,740.01, 21,721.37 and 8,666.69

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Solution

The fourth proportional to 15,740.01, 21,721.37 and 8,666.69 is: 11,960.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.01 : 21,721.37 = 8,666.69 : x
  2. Step 2: Convert to fraction form
    15,740.01/21,721.37 = 8,666.69/x
  3. Step 3: Cross multiply
    15,740.01x = 21,721.37 × 8,666.69
  4. Step 4: Simplify right side
    15,740.01x = 188,252,228.23
  5. Step 5: Solve for x
    x = 188,252,228.23/15,740.01
  6. Step 6: Final answer
    x = 11,960.11

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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.