Home / 13,080.22-18,050.47-7,111.82

Finding the Fourth Proportional to 13,080.22, 18,050.47 and 7,111.82

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Solution

The fourth proportional to 13,080.22, 18,050.47 and 7,111.82 is: 9,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.22 : 18,050.47 = 7,111.82 : x
  2. Step 2: Convert to fraction form
    13,080.22/18,050.47 = 7,111.82/x
  3. Step 3: Cross multiply
    13,080.22x = 18,050.47 × 7,111.82
  4. Step 4: Simplify right side
    13,080.22x = 128,371,720.90
  5. Step 5: Solve for x
    x = 128,371,720.90/13,080.22
  6. Step 6: Final answer
    x = 9,814.19

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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.