Home / 13,258.52-18,294.99-8,220.91

Finding the Fourth Proportional to 13,258.52, 18,294.99 and 8,220.91

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Solution

The fourth proportional to 13,258.52, 18,294.99 and 8,220.91 is: 11,343.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.52 : 18,294.99 = 8,220.91 : x
  2. Step 2: Convert to fraction form
    13,258.52/18,294.99 = 8,220.91/x
  3. Step 3: Cross multiply
    13,258.52x = 18,294.99 × 8,220.91
  4. Step 4: Simplify right side
    13,258.52x = 150,401,420.50
  5. Step 5: Solve for x
    x = 150,401,420.50/13,258.52
  6. Step 6: Final answer
    x = 11,343.75

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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.