Home / 10,919.08-15,063.54-7,381

Finding the Fourth Proportional to 10,919.08, 15,063.54 and 7,381

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Solution

The fourth proportional to 10,919.08, 15,063.54 and 7,381 is: 10,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.08 : 15,063.54 = 7,381 : x
  2. Step 2: Convert to fraction form
    10,919.08/15,063.54 = 7,381/x
  3. Step 3: Cross multiply
    10,919.08x = 15,063.54 × 7,381
  4. Step 4: Simplify right side
    10,919.08x = 111,183,988.74
  5. Step 5: Solve for x
    x = 111,183,988.74/10,919.08
  6. Step 6: Final answer
    x = 10,182.54

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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.