Home / 15,740.28-21,721.77-8,666.82

Finding the Fourth Proportional to 15,740.28, 21,721.77 and 8,666.82

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Solution

The fourth proportional to 15,740.28, 21,721.77 and 8,666.82 is: 11,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.28 : 21,721.77 = 8,666.82 : x
  2. Step 2: Convert to fraction form
    15,740.28/21,721.77 = 8,666.82/x
  3. Step 3: Cross multiply
    15,740.28x = 21,721.77 × 8,666.82
  4. Step 4: Simplify right side
    15,740.28x = 188,258,670.67
  5. Step 5: Solve for x
    x = 188,258,670.67/15,740.28
  6. Step 6: Final answer
    x = 11,960.31

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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.