Home / 21,040.35-29,035.76-11,480.19

Finding the Fourth Proportional to 21,040.35, 29,035.76 and 11,480.19

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Solution

The fourth proportional to 21,040.35, 29,035.76 and 11,480.19 is: 15,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.35 : 29,035.76 = 11,480.19 : x
  2. Step 2: Convert to fraction form
    21,040.35/29,035.76 = 11,480.19/x
  3. Step 3: Cross multiply
    21,040.35x = 29,035.76 × 11,480.19
  4. Step 4: Simplify right side
    21,040.35x = 333,335,984.19
  5. Step 5: Solve for x
    x = 333,335,984.19/21,040.35
  6. Step 6: Final answer
    x = 15,842.70

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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.