Home / 13,417.31-18,515.79-7,367.65

Finding the Fourth Proportional to 13,417.31, 18,515.79 and 7,367.65

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Solution

The fourth proportional to 13,417.31, 18,515.79 and 7,367.65 is: 10,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.31 : 18,515.79 = 7,367.65 : x
  2. Step 2: Convert to fraction form
    13,417.31/18,515.79 = 7,367.65/x
  3. Step 3: Cross multiply
    13,417.31x = 18,515.79 × 7,367.65
  4. Step 4: Simplify right side
    13,417.31x = 136,417,813.90
  5. Step 5: Solve for x
    x = 136,417,813.90/13,417.31
  6. Step 6: Final answer
    x = 10,167.30

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Double scale
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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.