Home / 13,065.12-18,029.16-7,399.08

Finding the Fourth Proportional to 13,065.12, 18,029.16 and 7,399.08

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Solution

The fourth proportional to 13,065.12, 18,029.16 and 7,399.08 is: 10,210.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.12 : 18,029.16 = 7,399.08 : x
  2. Step 2: Convert to fraction form
    13,065.12/18,029.16 = 7,399.08/x
  3. Step 3: Cross multiply
    13,065.12x = 18,029.16 × 7,399.08
  4. Step 4: Simplify right side
    13,065.12x = 133,399,197.17
  5. Step 5: Solve for x
    x = 133,399,197.17/13,065.12
  6. Step 6: Final answer
    x = 10,210.33

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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.