Home / 27,690.53-38,212.99-15,115.28

Finding the Fourth Proportional to 27,690.53, 38,212.99 and 15,115.28

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Solution

The fourth proportional to 27,690.53, 38,212.99 and 15,115.28 is: 20,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.53 : 38,212.99 = 15,115.28 : x
  2. Step 2: Convert to fraction form
    27,690.53/38,212.99 = 15,115.28/x
  3. Step 3: Cross multiply
    27,690.53x = 38,212.99 × 15,115.28
  4. Step 4: Simplify right side
    27,690.53x = 577,600,043.49
  5. Step 5: Solve for x
    x = 577,600,043.49/27,690.53
  6. Step 6: Final answer
    x = 20,859.12

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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.