Home / 10,112.97-15,172.40-4,188.77

Finding the Fourth Proportional to 10,112.97, 15,172.40 and 4,188.77

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Solution

The fourth proportional to 10,112.97, 15,172.40 and 4,188.77 is: 6,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.97 : 15,172.40 = 4,188.77 : x
  2. Step 2: Convert to fraction form
    10,112.97/15,172.40 = 4,188.77/x
  3. Step 3: Cross multiply
    10,112.97x = 15,172.40 × 4,188.77
  4. Step 4: Simplify right side
    10,112.97x = 63,553,693.95
  5. Step 5: Solve for x
    x = 63,553,693.95/10,112.97
  6. Step 6: Final answer
    x = 6,284.37

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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.