Home / 12,079.53-18,119.30-3,315.74

Finding the Fourth Proportional to 12,079.53, 18,119.30 and 3,315.74

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Solution

The fourth proportional to 12,079.53, 18,119.30 and 3,315.74 is: 4,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.53 : 18,119.30 = 3,315.74 : x
  2. Step 2: Convert to fraction form
    12,079.53/18,119.30 = 3,315.74/x
  3. Step 3: Cross multiply
    12,079.53x = 18,119.30 × 3,315.74
  4. Step 4: Simplify right side
    12,079.53x = 60,078,780.61
  5. Step 5: Solve for x
    x = 60,078,780.61/12,079.53
  6. Step 6: Final answer
    x = 4,973.60

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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.