Home / 13,079.68-18,050.11-7,111.22

Finding the Fourth Proportional to 13,079.68, 18,050.11 and 7,111.22

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Solution

The fourth proportional to 13,079.68, 18,050.11 and 7,111.22 is: 9,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.68 : 18,050.11 = 7,111.22 : x
  2. Step 2: Convert to fraction form
    13,079.68/18,050.11 = 7,111.22/x
  3. Step 3: Cross multiply
    13,079.68x = 18,050.11 × 7,111.22
  4. Step 4: Simplify right side
    13,079.68x = 128,358,212.98
  5. Step 5: Solve for x
    x = 128,358,212.98/13,079.68
  6. Step 6: Final answer
    x = 9,813.56

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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.