Home / 20,722.44-28,596.98-11,291.01

Finding the Fourth Proportional to 20,722.44, 28,596.98 and 11,291.01

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Solution

The fourth proportional to 20,722.44, 28,596.98 and 11,291.01 is: 15,581.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.44 : 28,596.98 = 11,291.01 : x
  2. Step 2: Convert to fraction form
    20,722.44/28,596.98 = 11,291.01/x
  3. Step 3: Cross multiply
    20,722.44x = 28,596.98 × 11,291.01
  4. Step 4: Simplify right side
    20,722.44x = 322,888,587.71
  5. Step 5: Solve for x
    x = 322,888,587.71/20,722.44
  6. Step 6: Final answer
    x = 15,581.59

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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.