Home / 13,359.07-18,434.75-7,390.38

Finding the Fourth Proportional to 13,359.07, 18,434.75 and 7,390.38

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Solution

The fourth proportional to 13,359.07, 18,434.75 and 7,390.38 is: 10,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.07 : 18,434.75 = 7,390.38 : x
  2. Step 2: Convert to fraction form
    13,359.07/18,434.75 = 7,390.38/x
  3. Step 3: Cross multiply
    13,359.07x = 18,434.75 × 7,390.38
  4. Step 4: Simplify right side
    13,359.07x = 136,239,826.18
  5. Step 5: Solve for x
    x = 136,239,826.18/13,359.07
  6. Step 6: Final answer
    x = 10,198.30

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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.