Home / 13,424.02-18,522.16-8,118.74

Finding the Fourth Proportional to 13,424.02, 18,522.16 and 8,118.74

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Solution

The fourth proportional to 13,424.02, 18,522.16 and 8,118.74 is: 11,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.02 : 18,522.16 = 8,118.74 : x
  2. Step 2: Convert to fraction form
    13,424.02/18,522.16 = 8,118.74/x
  3. Step 3: Cross multiply
    13,424.02x = 18,522.16 × 8,118.74
  4. Step 4: Simplify right side
    13,424.02x = 150,376,601.28
  5. Step 5: Solve for x
    x = 150,376,601.28/13,424.02
  6. Step 6: Final answer
    x = 11,202.05

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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.