Home / 11,909.79-17,864.91-5,670.45

Finding the Fourth Proportional to 11,909.79, 17,864.91 and 5,670.45

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Solution

The fourth proportional to 11,909.79, 17,864.91 and 5,670.45 is: 8,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.79 : 17,864.91 = 5,670.45 : x
  2. Step 2: Convert to fraction form
    11,909.79/17,864.91 = 5,670.45/x
  3. Step 3: Cross multiply
    11,909.79x = 17,864.91 × 5,670.45
  4. Step 4: Simplify right side
    11,909.79x = 101,302,078.91
  5. Step 5: Solve for x
    x = 101,302,078.91/11,909.79
  6. Step 6: Final answer
    x = 8,505.78

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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.