Home / 27,106.89-40,660.08-21,188.75

Finding the Fourth Proportional to 27,106.89, 40,660.08 and 21,188.75

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Solution

The fourth proportional to 27,106.89, 40,660.08 and 21,188.75 is: 31,782.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,106.89 : 40,660.08 = 21,188.75 : x
  2. Step 2: Convert to fraction form
    27,106.89/40,660.08 = 21,188.75/x
  3. Step 3: Cross multiply
    27,106.89x = 40,660.08 × 21,188.75
  4. Step 4: Simplify right side
    27,106.89x = 861,536,066.80
  5. Step 5: Solve for x
    x = 861,536,066.80/27,106.89
  6. Step 6: Final answer
    x = 31,782.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.