Home / 19,867.70-27,417.46-10,915.78

Finding the Fourth Proportional to 19,867.70, 27,417.46 and 10,915.78

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Solution

The fourth proportional to 19,867.70, 27,417.46 and 10,915.78 is: 15,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867.70 : 27,417.46 = 10,915.78 : x
  2. Step 2: Convert to fraction form
    19,867.70/27,417.46 = 10,915.78/x
  3. Step 3: Cross multiply
    19,867.70x = 27,417.46 × 10,915.78
  4. Step 4: Simplify right side
    19,867.70x = 299,282,961.52
  5. Step 5: Solve for x
    x = 299,282,961.52/19,867.70
  6. Step 6: Final answer
    x = 15,063.80

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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.