Home / 18,122.49-25,032.99-15,107.46

Finding the Fourth Proportional to 18,122.49, 25,032.99 and 15,107.46

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Solution

The fourth proportional to 18,122.49, 25,032.99 and 15,107.46 is: 20,868.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.49 : 25,032.99 = 15,107.46 : x
  2. Step 2: Convert to fraction form
    18,122.49/25,032.99 = 15,107.46/x
  3. Step 3: Cross multiply
    18,122.49x = 25,032.99 × 15,107.46
  4. Step 4: Simplify right side
    18,122.49x = 378,184,895.11
  5. Step 5: Solve for x
    x = 378,184,895.11/18,122.49
  6. Step 6: Final answer
    x = 20,868.26

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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.