Home / 20,601.06-28,424.70-13,899.12

Finding the Fourth Proportional to 20,601.06, 28,424.70 and 13,899.12

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Solution

The fourth proportional to 20,601.06, 28,424.70 and 13,899.12 is: 19,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.06 : 28,424.70 = 13,899.12 : x
  2. Step 2: Convert to fraction form
    20,601.06/28,424.70 = 13,899.12/x
  3. Step 3: Cross multiply
    20,601.06x = 28,424.70 × 13,899.12
  4. Step 4: Simplify right side
    20,601.06x = 395,078,316.26
  5. Step 5: Solve for x
    x = 395,078,316.26/20,601.06
  6. Step 6: Final answer
    x = 19,177.57

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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.