Home / 19,411.11-26,788.28-10,915.90

Finding the Fourth Proportional to 19,411.11, 26,788.28 and 10,915.90

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Solution

The fourth proportional to 19,411.11, 26,788.28 and 10,915.90 is: 15,064.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.11 : 26,788.28 = 10,915.90 : x
  2. Step 2: Convert to fraction form
    19,411.11/26,788.28 = 10,915.90/x
  3. Step 3: Cross multiply
    19,411.11x = 26,788.28 × 10,915.90
  4. Step 4: Simplify right side
    19,411.11x = 292,418,185.65
  5. Step 5: Solve for x
    x = 292,418,185.65/19,411.11
  6. Step 6: Final answer
    x = 15,064.48

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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.