Home / 20,364.06-28,101.65-11,411.65

Finding the Fourth Proportional to 20,364.06, 28,101.65 and 11,411.65

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Solution

The fourth proportional to 20,364.06, 28,101.65 and 11,411.65 is: 15,747.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.06 : 28,101.65 = 11,411.65 : x
  2. Step 2: Convert to fraction form
    20,364.06/28,101.65 = 11,411.65/x
  3. Step 3: Cross multiply
    20,364.06x = 28,101.65 × 11,411.65
  4. Step 4: Simplify right side
    20,364.06x = 320,686,194.22
  5. Step 5: Solve for x
    x = 320,686,194.22/20,364.06
  6. Step 6: Final answer
    x = 15,747.66

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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.