Home / 13,112.69-18,102.21-8,886.08

Finding the Fourth Proportional to 13,112.69, 18,102.21 and 8,886.08

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Solution

The fourth proportional to 13,112.69, 18,102.21 and 8,886.08 is: 12,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.69 : 18,102.21 = 8,886.08 : x
  2. Step 2: Convert to fraction form
    13,112.69/18,102.21 = 8,886.08/x
  3. Step 3: Cross multiply
    13,112.69x = 18,102.21 × 8,886.08
  4. Step 4: Simplify right side
    13,112.69x = 160,857,731.49
  5. Step 5: Solve for x
    x = 160,857,731.49/13,112.69
  6. Step 6: Final answer
    x = 12,267.34

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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.