Home / 10,919.62-15,069-6,203.90

Finding the Fourth Proportional to 10,919.62, 15,069 and 6,203.90

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Solution

The fourth proportional to 10,919.62, 15,069 and 6,203.90 is: 8,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.62 : 15,069 = 6,203.90 : x
  2. Step 2: Convert to fraction form
    10,919.62/15,069 = 6,203.90/x
  3. Step 3: Cross multiply
    10,919.62x = 15,069 × 6,203.90
  4. Step 4: Simplify right side
    10,919.62x = 93,486,569.10
  5. Step 5: Solve for x
    x = 93,486,569.10/10,919.62
  6. Step 6: Final answer
    x = 8,561.34

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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.