Home / 13,391.08-18,477.99-7,422.69

Finding the Fourth Proportional to 13,391.08, 18,477.99 and 7,422.69

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Solution

The fourth proportional to 13,391.08, 18,477.99 and 7,422.69 is: 10,242.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.08 : 18,477.99 = 7,422.69 : x
  2. Step 2: Convert to fraction form
    13,391.08/18,477.99 = 7,422.69/x
  3. Step 3: Cross multiply
    13,391.08x = 18,477.99 × 7,422.69
  4. Step 4: Simplify right side
    13,391.08x = 137,156,391.59
  5. Step 5: Solve for x
    x = 137,156,391.59/13,391.08
  6. Step 6: Final answer
    x = 10,242.37

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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.