Home / 19,868.08-27,418.46-10,915.81

Finding the Fourth Proportional to 19,868.08, 27,418.46 and 10,915.81

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Solution

The fourth proportional to 19,868.08, 27,418.46 and 10,915.81 is: 15,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.08 : 27,418.46 = 10,915.81 : x
  2. Step 2: Convert to fraction form
    19,868.08/27,418.46 = 10,915.81/x
  3. Step 3: Cross multiply
    19,868.08x = 27,418.46 × 10,915.81
  4. Step 4: Simplify right side
    19,868.08x = 299,294,679.55
  5. Step 5: Solve for x
    x = 299,294,679.55/19,868.08
  6. Step 6: Final answer
    x = 15,064.10

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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.