Home / 15,839.80-21,868.03-11,828.75

Finding the Fourth Proportional to 15,839.80, 21,868.03 and 11,828.75

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Solution

The fourth proportional to 15,839.80, 21,868.03 and 11,828.75 is: 16,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.80 : 21,868.03 = 11,828.75 : x
  2. Step 2: Convert to fraction form
    15,839.80/21,868.03 = 11,828.75/x
  3. Step 3: Cross multiply
    15,839.80x = 21,868.03 × 11,828.75
  4. Step 4: Simplify right side
    15,839.80x = 258,671,329.52
  5. Step 5: Solve for x
    x = 258,671,329.52/15,839.80
  6. Step 6: Final answer
    x = 16,330.46

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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.