Home / 28,245.24-38,976.48-15,669

Finding the Fourth Proportional to 28,245.24, 38,976.48 and 15,669

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Solution

The fourth proportional to 28,245.24, 38,976.48 and 15,669 is: 21,622.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.24 : 38,976.48 = 15,669 : x
  2. Step 2: Convert to fraction form
    28,245.24/38,976.48 = 15,669/x
  3. Step 3: Cross multiply
    28,245.24x = 38,976.48 × 15,669
  4. Step 4: Simplify right side
    28,245.24x = 610,722,465.12
  5. Step 5: Solve for x
    x = 610,722,465.12/28,245.24
  6. Step 6: Final answer
    x = 21,622.14

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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.