Home / 13,079.92-18,050.20-7,111.44

Finding the Fourth Proportional to 13,079.92, 18,050.20 and 7,111.44

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Solution

The fourth proportional to 13,079.92, 18,050.20 and 7,111.44 is: 9,813.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.92 : 18,050.20 = 7,111.44 : x
  2. Step 2: Convert to fraction form
    13,079.92/18,050.20 = 7,111.44/x
  3. Step 3: Cross multiply
    13,079.92x = 18,050.20 × 7,111.44
  4. Step 4: Simplify right side
    13,079.92x = 128,362,914.29
  5. Step 5: Solve for x
    x = 128,362,914.29/13,079.92
  6. Step 6: Final answer
    x = 9,813.74

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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.