Home / 27,775.76-38,330.84-15,839.80

Finding the Fourth Proportional to 27,775.76, 38,330.84 and 15,839.80

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Solution

The fourth proportional to 27,775.76, 38,330.84 and 15,839.80 is: 21,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,775.76 : 38,330.84 = 15,839.80 : x
  2. Step 2: Convert to fraction form
    27,775.76/38,330.84 = 15,839.80/x
  3. Step 3: Cross multiply
    27,775.76x = 38,330.84 × 15,839.80
  4. Step 4: Simplify right side
    27,775.76x = 607,152,783.20
  5. Step 5: Solve for x
    x = 607,152,783.20/27,775.76
  6. Step 6: Final answer
    x = 21,859.09

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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.