Home / 19,395.68-26,758.24-12,679.20

Finding the Fourth Proportional to 19,395.68, 26,758.24 and 12,679.20

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Solution

The fourth proportional to 19,395.68, 26,758.24 and 12,679.20 is: 17,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395.68 : 26,758.24 = 12,679.20 : x
  2. Step 2: Convert to fraction form
    19,395.68/26,758.24 = 12,679.20/x
  3. Step 3: Cross multiply
    19,395.68x = 26,758.24 × 12,679.20
  4. Step 4: Simplify right side
    19,395.68x = 339,273,076.61
  5. Step 5: Solve for x
    x = 339,273,076.61/19,395.68
  6. Step 6: Final answer
    x = 17,492.20

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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.