Home / 20,722.65-28,596.99-11,291.22

Finding the Fourth Proportional to 20,722.65, 28,596.99 and 11,291.22

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Solution

The fourth proportional to 20,722.65, 28,596.99 and 11,291.22 is: 15,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.65 : 28,596.99 = 11,291.22 : x
  2. Step 2: Convert to fraction form
    20,722.65/28,596.99 = 11,291.22/x
  3. Step 3: Cross multiply
    20,722.65x = 28,596.99 × 11,291.22
  4. Step 4: Simplify right side
    20,722.65x = 322,894,905.43
  5. Step 5: Solve for x
    x = 322,894,905.43/20,722.65
  6. Step 6: Final answer
    x = 15,581.74

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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.