Home / 13,111.43-18,078.08-10,712.54

Finding the Fourth Proportional to 13,111.43, 18,078.08 and 10,712.54

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Solution

The fourth proportional to 13,111.43, 18,078.08 and 10,712.54 is: 14,770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.43 : 18,078.08 = 10,712.54 : x
  2. Step 2: Convert to fraction form
    13,111.43/18,078.08 = 10,712.54/x
  3. Step 3: Cross multiply
    13,111.43x = 18,078.08 × 10,712.54
  4. Step 4: Simplify right side
    13,111.43x = 193,662,011.17
  5. Step 5: Solve for x
    x = 193,662,011.17/13,111.43
  6. Step 6: Final answer
    x = 14,770.48

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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.