Home / 21,720.96-32,581.10-6,929.79

Finding the Fourth Proportional to 21,720.96, 32,581.10 and 6,929.79

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Solution

The fourth proportional to 21,720.96, 32,581.10 and 6,929.79 is: 10,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.96 : 32,581.10 = 6,929.79 : x
  2. Step 2: Convert to fraction form
    21,720.96/32,581.10 = 6,929.79/x
  3. Step 3: Cross multiply
    21,720.96x = 32,581.10 × 6,929.79
  4. Step 4: Simplify right side
    21,720.96x = 225,780,076.11
  5. Step 5: Solve for x
    x = 225,780,076.11/21,720.96
  6. Step 6: Final answer
    x = 10,394.57

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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.