Home / 13,122.04-18,115.95-8,644.15

Finding the Fourth Proportional to 13,122.04, 18,115.95 and 8,644.15

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Solution

The fourth proportional to 13,122.04, 18,115.95 and 8,644.15 is: 11,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.04 : 18,115.95 = 8,644.15 : x
  2. Step 2: Convert to fraction form
    13,122.04/18,115.95 = 8,644.15/x
  3. Step 3: Cross multiply
    13,122.04x = 18,115.95 × 8,644.15
  4. Step 4: Simplify right side
    13,122.04x = 156,596,989.19
  5. Step 5: Solve for x
    x = 156,596,989.19/13,122.04
  6. Step 6: Final answer
    x = 11,933.89

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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.