Home / 12,901.20-19,351.80-3,541.20

Finding the Fourth Proportional to 12,901.20, 19,351.80 and 3,541.20

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Solution

The fourth proportional to 12,901.20, 19,351.80 and 3,541.20 is: 5,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.20 : 19,351.80 = 3,541.20 : x
  2. Step 2: Convert to fraction form
    12,901.20/19,351.80 = 3,541.20/x
  3. Step 3: Cross multiply
    12,901.20x = 19,351.80 × 3,541.20
  4. Step 4: Simplify right side
    12,901.20x = 68,528,594.16
  5. Step 5: Solve for x
    x = 68,528,594.16/12,901.20
  6. Step 6: Final answer
    x = 5,311.80

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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.