Home / 19,868.09-27,417.99-10,915.77

Finding the Fourth Proportional to 19,868.09, 27,417.99 and 10,915.77

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Solution

The fourth proportional to 19,868.09, 27,417.99 and 10,915.77 is: 15,063.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.09 : 27,417.99 = 10,915.77 : x
  2. Step 2: Convert to fraction form
    19,868.09/27,417.99 = 10,915.77/x
  3. Step 3: Cross multiply
    19,868.09x = 27,417.99 × 10,915.77
  4. Step 4: Simplify right side
    19,868.09x = 299,288,472.70
  5. Step 5: Solve for x
    x = 299,288,472.70/19,868.09
  6. Step 6: Final answer
    x = 15,063.78

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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.