Home / 12,981.06-17,914.80-7,392.06

Finding the Fourth Proportional to 12,981.06, 17,914.80 and 7,392.06

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Solution

The fourth proportional to 12,981.06, 17,914.80 and 7,392.06 is: 10,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.06 : 17,914.80 = 7,392.06 : x
  2. Step 2: Convert to fraction form
    12,981.06/17,914.80 = 7,392.06/x
  3. Step 3: Cross multiply
    12,981.06x = 17,914.80 × 7,392.06
  4. Step 4: Simplify right side
    12,981.06x = 132,427,276.49
  5. Step 5: Solve for x
    x = 132,427,276.49/12,981.06
  6. Step 6: Final answer
    x = 10,201.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.