Home / 13,124.43-18,111.74-7,747.11

Finding the Fourth Proportional to 13,124.43, 18,111.74 and 7,747.11

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Solution

The fourth proportional to 13,124.43, 18,111.74 and 7,747.11 is: 10,691.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.43 : 18,111.74 = 7,747.11 : x
  2. Step 2: Convert to fraction form
    13,124.43/18,111.74 = 7,747.11/x
  3. Step 3: Cross multiply
    13,124.43x = 18,111.74 × 7,747.11
  4. Step 4: Simplify right side
    13,124.43x = 140,313,603.34
  5. Step 5: Solve for x
    x = 140,313,603.34/13,124.43
  6. Step 6: Final answer
    x = 10,691.02

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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.