Home / 21,798.75-30,081.38-12,367.11

Finding the Fourth Proportional to 21,798.75, 30,081.38 and 12,367.11

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Solution

The fourth proportional to 21,798.75, 30,081.38 and 12,367.11 is: 17,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,798.75 : 30,081.38 = 12,367.11 : x
  2. Step 2: Convert to fraction form
    21,798.75/30,081.38 = 12,367.11/x
  3. Step 3: Cross multiply
    21,798.75x = 30,081.38 × 12,367.11
  4. Step 4: Simplify right side
    21,798.75x = 372,019,615.92
  5. Step 5: Solve for x
    x = 372,019,615.92/21,798.75
  6. Step 6: Final answer
    x = 17,066.10

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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.