Home / 13,112.87-18,102.47-8,886.27

Finding the Fourth Proportional to 13,112.87, 18,102.47 and 8,886.27

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Solution

The fourth proportional to 13,112.87, 18,102.47 and 8,886.27 is: 12,267.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.87 : 18,102.47 = 8,886.27 : x
  2. Step 2: Convert to fraction form
    13,112.87/18,102.47 = 8,886.27/x
  3. Step 3: Cross multiply
    13,112.87x = 18,102.47 × 8,886.27
  4. Step 4: Simplify right side
    13,112.87x = 160,863,391.66
  5. Step 5: Solve for x
    x = 160,863,391.66/13,112.87
  6. Step 6: Final answer
    x = 12,267.59

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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.