Home / 20,722.04-28,596.38-11,290.59

Finding the Fourth Proportional to 20,722.04, 28,596.38 and 11,290.59

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Solution

The fourth proportional to 20,722.04, 28,596.38 and 11,290.59 is: 15,581.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.04 : 28,596.38 = 11,290.59 : x
  2. Step 2: Convert to fraction form
    20,722.04/28,596.38 = 11,290.59/x
  3. Step 3: Cross multiply
    20,722.04x = 28,596.38 × 11,290.59
  4. Step 4: Simplify right side
    20,722.04x = 322,869,945.61
  5. Step 5: Solve for x
    x = 322,869,945.61/20,722.04
  6. Step 6: Final answer
    x = 15,581.00

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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.