Home / 20,794.24-28,686.06-15,120.19

Finding the Fourth Proportional to 20,794.24, 28,686.06 and 15,120.19

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Solution

The fourth proportional to 20,794.24, 28,686.06 and 15,120.19 is: 20,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.24 : 28,686.06 = 15,120.19 : x
  2. Step 2: Convert to fraction form
    20,794.24/28,686.06 = 15,120.19/x
  3. Step 3: Cross multiply
    20,794.24x = 28,686.06 × 15,120.19
  4. Step 4: Simplify right side
    20,794.24x = 433,738,677.55
  5. Step 5: Solve for x
    x = 433,738,677.55/20,794.24
  6. Step 6: Final answer
    x = 20,858.60

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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.