Home / 15,679.54-21,637.26-8,965.05

Finding the Fourth Proportional to 15,679.54, 21,637.26 and 8,965.05

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Solution

The fourth proportional to 15,679.54, 21,637.26 and 8,965.05 is: 12,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.54 : 21,637.26 = 8,965.05 : x
  2. Step 2: Convert to fraction form
    15,679.54/21,637.26 = 8,965.05/x
  3. Step 3: Cross multiply
    15,679.54x = 21,637.26 × 8,965.05
  4. Step 4: Simplify right side
    15,679.54x = 193,979,036.62
  5. Step 5: Solve for x
    x = 193,979,036.62/15,679.54
  6. Step 6: Final answer
    x = 12,371.47

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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.