Home / 12,901.20-19,351.80-10,276.80

Finding the Fourth Proportional to 12,901.20, 19,351.80 and 10,276.80

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Solution

The fourth proportional to 12,901.20, 19,351.80 and 10,276.80 is: 15,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.20 : 19,351.80 = 10,276.80 : x
  2. Step 2: Convert to fraction form
    12,901.20/19,351.80 = 10,276.80/x
  3. Step 3: Cross multiply
    12,901.20x = 19,351.80 × 10,276.80
  4. Step 4: Simplify right side
    12,901.20x = 198,874,578.24
  5. Step 5: Solve for x
    x = 198,874,578.24/12,901.20
  6. Step 6: Final answer
    x = 15,415.20

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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.