Home / 10,931.85-16,403.85-6,774.12

Finding the Fourth Proportional to 10,931.85, 16,403.85 and 6,774.12

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Solution

The fourth proportional to 10,931.85, 16,403.85 and 6,774.12 is: 10,164.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.85 : 16,403.85 = 6,774.12 : x
  2. Step 2: Convert to fraction form
    10,931.85/16,403.85 = 6,774.12/x
  3. Step 3: Cross multiply
    10,931.85x = 16,403.85 × 6,774.12
  4. Step 4: Simplify right side
    10,931.85x = 111,121,648.36
  5. Step 5: Solve for x
    x = 111,121,648.36/10,931.85
  6. Step 6: Final answer
    x = 10,164.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.