Home / 27,819.86-38,392.38-15,882.99

Finding the Fourth Proportional to 27,819.86, 38,392.38 and 15,882.99

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Solution

The fourth proportional to 27,819.86, 38,392.38 and 15,882.99 is: 21,919.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.86 : 38,392.38 = 15,882.99 : x
  2. Step 2: Convert to fraction form
    27,819.86/38,392.38 = 15,882.99/x
  3. Step 3: Cross multiply
    27,819.86x = 38,392.38 × 15,882.99
  4. Step 4: Simplify right side
    27,819.86x = 609,785,643.64
  5. Step 5: Solve for x
    x = 609,785,643.64/27,819.86
  6. Step 6: Final answer
    x = 21,919.08

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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.