Home / 15,744.77-21,726.79-8,671.17

Finding the Fourth Proportional to 15,744.77, 21,726.79 and 8,671.17

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Solution

The fourth proportional to 15,744.77, 21,726.79 and 8,671.17 is: 11,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.77 : 21,726.79 = 8,671.17 : x
  2. Step 2: Convert to fraction form
    15,744.77/21,726.79 = 8,671.17/x
  3. Step 3: Cross multiply
    15,744.77x = 21,726.79 × 8,671.17
  4. Step 4: Simplify right side
    15,744.77x = 188,396,689.64
  5. Step 5: Solve for x
    x = 188,396,689.64/15,744.77
  6. Step 6: Final answer
    x = 11,965.67

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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.