Home / 15,019.88-20,728.36-10,772.24

Finding the Fourth Proportional to 15,019.88, 20,728.36 and 10,772.24

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Solution

The fourth proportional to 15,019.88, 20,728.36 and 10,772.24 is: 14,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.88 : 20,728.36 = 10,772.24 : x
  2. Step 2: Convert to fraction form
    15,019.88/20,728.36 = 10,772.24/x
  3. Step 3: Cross multiply
    15,019.88x = 20,728.36 × 10,772.24
  4. Step 4: Simplify right side
    15,019.88x = 223,290,868.73
  5. Step 5: Solve for x
    x = 223,290,868.73/15,019.88
  6. Step 6: Final answer
    x = 14,866.36

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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.