Home / 19,867.88-27,418.46-10,915.80

Finding the Fourth Proportional to 19,867.88, 27,418.46 and 10,915.80

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Solution

The fourth proportional to 19,867.88, 27,418.46 and 10,915.80 is: 15,064.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867.88 : 27,418.46 = 10,915.80 : x
  2. Step 2: Convert to fraction form
    19,867.88/27,418.46 = 10,915.80/x
  3. Step 3: Cross multiply
    19,867.88x = 27,418.46 × 10,915.80
  4. Step 4: Simplify right side
    19,867.88x = 299,294,425.67
  5. Step 5: Solve for x
    x = 299,294,425.67/19,867.88
  6. Step 6: Final answer
    x = 15,064.24

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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.