Home / 15,447.66-21,309.91-9,772.84

Finding the Fourth Proportional to 15,447.66, 21,309.91 and 9,772.84

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Solution

The fourth proportional to 15,447.66, 21,309.91 and 9,772.84 is: 13,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.66 : 21,309.91 = 9,772.84 : x
  2. Step 2: Convert to fraction form
    15,447.66/21,309.91 = 9,772.84/x
  3. Step 3: Cross multiply
    15,447.66x = 21,309.91 × 9,772.84
  4. Step 4: Simplify right side
    15,447.66x = 208,258,340.84
  5. Step 5: Solve for x
    x = 208,258,340.84/15,447.66
  6. Step 6: Final answer
    x = 13,481.55

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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.