Home / 21,979.35-32,945.76-7,184.30

Finding the Fourth Proportional to 21,979.35, 32,945.76 and 7,184.30

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Solution

The fourth proportional to 21,979.35, 32,945.76 and 7,184.30 is: 10,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.35 : 32,945.76 = 7,184.30 : x
  2. Step 2: Convert to fraction form
    21,979.35/32,945.76 = 7,184.30/x
  3. Step 3: Cross multiply
    21,979.35x = 32,945.76 × 7,184.30
  4. Step 4: Simplify right side
    21,979.35x = 236,692,058.84
  5. Step 5: Solve for x
    x = 236,692,058.84/21,979.35
  6. Step 6: Final answer
    x = 10,768.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.