Home / 12,740.97-19,122.66-6,172.05

Finding the Fourth Proportional to 12,740.97, 19,122.66 and 6,172.05

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Solution

The fourth proportional to 12,740.97, 19,122.66 and 6,172.05 is: 9,263.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.97 : 19,122.66 = 6,172.05 : x
  2. Step 2: Convert to fraction form
    12,740.97/19,122.66 = 6,172.05/x
  3. Step 3: Cross multiply
    12,740.97x = 19,122.66 × 6,172.05
  4. Step 4: Simplify right side
    12,740.97x = 118,026,013.65
  5. Step 5: Solve for x
    x = 118,026,013.65/12,740.97
  6. Step 6: Final answer
    x = 9,263.50

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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.