Home / 12,581.88-17,358.48-8,811.06

Finding the Fourth Proportional to 12,581.88, 17,358.48 and 8,811.06

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Solution

The fourth proportional to 12,581.88, 17,358.48 and 8,811.06 is: 12,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.88 : 17,358.48 = 8,811.06 : x
  2. Step 2: Convert to fraction form
    12,581.88/17,358.48 = 8,811.06/x
  3. Step 3: Cross multiply
    12,581.88x = 17,358.48 × 8,811.06
  4. Step 4: Simplify right side
    12,581.88x = 152,946,608.79
  5. Step 5: Solve for x
    x = 152,946,608.79/12,581.88
  6. Step 6: Final answer
    x = 12,156.10

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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.