Home / 12,768.20-19,152.30-3,534.20

Finding the Fourth Proportional to 12,768.20, 19,152.30 and 3,534.20

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Solution

The fourth proportional to 12,768.20, 19,152.30 and 3,534.20 is: 5,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.20 : 19,152.30 = 3,534.20 : x
  2. Step 2: Convert to fraction form
    12,768.20/19,152.30 = 3,534.20/x
  3. Step 3: Cross multiply
    12,768.20x = 19,152.30 × 3,534.20
  4. Step 4: Simplify right side
    12,768.20x = 67,688,058.66
  5. Step 5: Solve for x
    x = 67,688,058.66/12,768.20
  6. Step 6: Final answer
    x = 5,301.30

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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.