Home / 18,890.06-26,071.20-11,721.25

Finding the Fourth Proportional to 18,890.06, 26,071.20 and 11,721.25

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Solution

The fourth proportional to 18,890.06, 26,071.20 and 11,721.25 is: 16,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.06 : 26,071.20 = 11,721.25 : x
  2. Step 2: Convert to fraction form
    18,890.06/26,071.20 = 11,721.25/x
  3. Step 3: Cross multiply
    18,890.06x = 26,071.20 × 11,721.25
  4. Step 4: Simplify right side
    18,890.06x = 305,587,085.59
  5. Step 5: Solve for x
    x = 305,587,085.59/18,890.06
  6. Step 6: Final answer
    x = 16,177.14

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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.