Home / 13,417.11-18,515.91-7,448.69

Finding the Fourth Proportional to 13,417.11, 18,515.91 and 7,448.69

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Solution

The fourth proportional to 13,417.11, 18,515.91 and 7,448.69 is: 10,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.11 : 18,515.91 = 7,448.69 : x
  2. Step 2: Convert to fraction form
    13,417.11/18,515.91 = 7,448.69/x
  3. Step 3: Cross multiply
    13,417.11x = 18,515.91 × 7,448.69
  4. Step 4: Simplify right side
    13,417.11x = 137,919,181.08
  5. Step 5: Solve for x
    x = 137,919,181.08/13,417.11
  6. Step 6: Final answer
    x = 10,279.35

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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.