Home / 19,238.26-28,862.70-8,139.10

Finding the Fourth Proportional to 19,238.26, 28,862.70 and 8,139.10

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Solution

The fourth proportional to 19,238.26, 28,862.70 and 8,139.10 is: 12,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.26 : 28,862.70 = 8,139.10 : x
  2. Step 2: Convert to fraction form
    19,238.26/28,862.70 = 8,139.10/x
  3. Step 3: Cross multiply
    19,238.26x = 28,862.70 × 8,139.10
  4. Step 4: Simplify right side
    19,238.26x = 234,916,401.57
  5. Step 5: Solve for x
    x = 234,916,401.57/19,238.26
  6. Step 6: Final answer
    x = 12,210.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.