Home / 12,746.40-19,120.16-3,981.48

Finding the Fourth Proportional to 12,746.40, 19,120.16 and 3,981.48

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Solution

The fourth proportional to 12,746.40, 19,120.16 and 3,981.48 is: 5,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.40 : 19,120.16 = 3,981.48 : x
  2. Step 2: Convert to fraction form
    12,746.40/19,120.16 = 3,981.48/x
  3. Step 3: Cross multiply
    12,746.40x = 19,120.16 × 3,981.48
  4. Step 4: Simplify right side
    12,746.40x = 76,126,534.64
  5. Step 5: Solve for x
    x = 76,126,534.64/12,746.40
  6. Step 6: Final answer
    x = 5,972.39

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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.