Home / 12,115.02-18,170.93-4,215.84

Finding the Fourth Proportional to 12,115.02, 18,170.93 and 4,215.84

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Solution

The fourth proportional to 12,115.02, 18,170.93 and 4,215.84 is: 6,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.02 : 18,170.93 = 4,215.84 : x
  2. Step 2: Convert to fraction form
    12,115.02/18,170.93 = 4,215.84/x
  3. Step 3: Cross multiply
    12,115.02x = 18,170.93 × 4,215.84
  4. Step 4: Simplify right side
    12,115.02x = 76,605,805.53
  5. Step 5: Solve for x
    x = 76,605,805.53/12,115.02
  6. Step 6: Final answer
    x = 6,323.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.