Home / 11,919.50-16,448.91-6,615.17

Finding the Fourth Proportional to 11,919.50, 16,448.91 and 6,615.17

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Solution

The fourth proportional to 11,919.50, 16,448.91 and 6,615.17 is: 9,128.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.50 : 16,448.91 = 6,615.17 : x
  2. Step 2: Convert to fraction form
    11,919.50/16,448.91 = 6,615.17/x
  3. Step 3: Cross multiply
    11,919.50x = 16,448.91 × 6,615.17
  4. Step 4: Simplify right side
    11,919.50x = 108,812,335.96
  5. Step 5: Solve for x
    x = 108,812,335.96/11,919.50
  6. Step 6: Final answer
    x = 9,128.93

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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.