Home / 15,107.48-20,774.38-13,114.55

Finding the Fourth Proportional to 15,107.48, 20,774.38 and 13,114.55

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Solution

The fourth proportional to 15,107.48, 20,774.38 and 13,114.55 is: 18,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.48 : 20,774.38 = 13,114.55 : x
  2. Step 2: Convert to fraction form
    15,107.48/20,774.38 = 13,114.55/x
  3. Step 3: Cross multiply
    15,107.48x = 20,774.38 × 13,114.55
  4. Step 4: Simplify right side
    15,107.48x = 272,446,645.23
  5. Step 5: Solve for x
    x = 272,446,645.23/15,107.48
  6. Step 6: Final answer
    x = 18,033.89

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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.