Home / 13,080.95-18,021.31-9,043.91

Finding the Fourth Proportional to 13,080.95, 18,021.31 and 9,043.91

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Solution

The fourth proportional to 13,080.95, 18,021.31 and 9,043.91 is: 12,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.95 : 18,021.31 = 9,043.91 : x
  2. Step 2: Convert to fraction form
    13,080.95/18,021.31 = 9,043.91/x
  3. Step 3: Cross multiply
    13,080.95x = 18,021.31 × 9,043.91
  4. Step 4: Simplify right side
    13,080.95x = 162,982,993.01
  5. Step 5: Solve for x
    x = 162,982,993.01/13,080.95
  6. Step 6: Final answer
    x = 12,459.57

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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.