Home / 27,814.79-38,388.33-15,878.84

Finding the Fourth Proportional to 27,814.79, 38,388.33 and 15,878.84

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Solution

The fourth proportional to 27,814.79, 38,388.33 and 15,878.84 is: 21,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,814.79 : 38,388.33 = 15,878.84 : x
  2. Step 2: Convert to fraction form
    27,814.79/38,388.33 = 15,878.84/x
  3. Step 3: Cross multiply
    27,814.79x = 38,388.33 × 15,878.84
  4. Step 4: Simplify right side
    27,814.79x = 609,561,958.00
  5. Step 5: Solve for x
    x = 609,561,958.00/27,814.79
  6. Step 6: Final answer
    x = 21,915.03

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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.