Home / 11,698.72-16,143.48-6,392.40

Finding the Fourth Proportional to 11,698.72, 16,143.48 and 6,392.40

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Solution

The fourth proportional to 11,698.72, 16,143.48 and 6,392.40 is: 8,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,698.72 : 16,143.48 = 6,392.40 : x
  2. Step 2: Convert to fraction form
    11,698.72/16,143.48 = 6,392.40/x
  3. Step 3: Cross multiply
    11,698.72x = 16,143.48 × 6,392.40
  4. Step 4: Simplify right side
    11,698.72x = 103,195,581.55
  5. Step 5: Solve for x
    x = 103,195,581.55/11,698.72
  6. Step 6: Final answer
    x = 8,821.10

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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.