Home / 25,106.80-37,660.20-21,218.80

Finding the Fourth Proportional to 25,106.80, 37,660.20 and 21,218.80

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Solution

The fourth proportional to 25,106.80, 37,660.20 and 21,218.80 is: 31,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,106.80 : 37,660.20 = 21,218.80 : x
  2. Step 2: Convert to fraction form
    25,106.80/37,660.20 = 21,218.80/x
  3. Step 3: Cross multiply
    25,106.80x = 37,660.20 × 21,218.80
  4. Step 4: Simplify right side
    25,106.80x = 799,104,251.76
  5. Step 5: Solve for x
    x = 799,104,251.76/25,106.80
  6. Step 6: Final answer
    x = 31,828.20

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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.