Home / 10,919.64-15,069.72-6,446.04

Finding the Fourth Proportional to 10,919.64, 15,069.72 and 6,446.04

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Solution

The fourth proportional to 10,919.64, 15,069.72 and 6,446.04 is: 8,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.64 : 15,069.72 = 6,446.04 : x
  2. Step 2: Convert to fraction form
    10,919.64/15,069.72 = 6,446.04/x
  3. Step 3: Cross multiply
    10,919.64x = 15,069.72 × 6,446.04
  4. Step 4: Simplify right side
    10,919.64x = 97,140,017.91
  5. Step 5: Solve for x
    x = 97,140,017.91/10,919.64
  6. Step 6: Final answer
    x = 8,895.90

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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.