Home / 13,421.18-18,522.93-8,116.03

Finding the Fourth Proportional to 13,421.18, 18,522.93 and 8,116.03

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Solution

The fourth proportional to 13,421.18, 18,522.93 and 8,116.03 is: 11,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.18 : 18,522.93 = 8,116.03 : x
  2. Step 2: Convert to fraction form
    13,421.18/18,522.93 = 8,116.03/x
  3. Step 3: Cross multiply
    13,421.18x = 18,522.93 × 8,116.03
  4. Step 4: Simplify right side
    13,421.18x = 150,332,709.16
  5. Step 5: Solve for x
    x = 150,332,709.16/13,421.18
  6. Step 6: Final answer
    x = 11,201.15

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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.