Home / 20,722.23-28,596.85-11,290.59

Finding the Fourth Proportional to 20,722.23, 28,596.85 and 11,290.59

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Solution

The fourth proportional to 20,722.23, 28,596.85 and 11,290.59 is: 15,581.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.23 : 28,596.85 = 11,290.59 : x
  2. Step 2: Convert to fraction form
    20,722.23/28,596.85 = 11,290.59/x
  3. Step 3: Cross multiply
    20,722.23x = 28,596.85 × 11,290.59
  4. Step 4: Simplify right side
    20,722.23x = 322,875,280.42
  5. Step 5: Solve for x
    x = 322,875,280.42/20,722.23
  6. Step 6: Final answer
    x = 15,581.11

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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.