Home / 21,040.80-31,561.20-17,584.80

Finding the Fourth Proportional to 21,040.80, 31,561.20 and 17,584.80

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Solution

The fourth proportional to 21,040.80, 31,561.20 and 17,584.80 is: 26,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.80 : 31,561.20 = 17,584.80 : x
  2. Step 2: Convert to fraction form
    21,040.80/31,561.20 = 17,584.80/x
  3. Step 3: Cross multiply
    21,040.80x = 31,561.20 × 17,584.80
  4. Step 4: Simplify right side
    21,040.80x = 554,997,389.76
  5. Step 5: Solve for x
    x = 554,997,389.76/21,040.80
  6. Step 6: Final answer
    x = 26,377.20

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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.