Home / 12,315.66-18,474.03-4,520.22

Finding the Fourth Proportional to 12,315.66, 18,474.03 and 4,520.22

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Solution

The fourth proportional to 12,315.66, 18,474.03 and 4,520.22 is: 6,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.66 : 18,474.03 = 4,520.22 : x
  2. Step 2: Convert to fraction form
    12,315.66/18,474.03 = 4,520.22/x
  3. Step 3: Cross multiply
    12,315.66x = 18,474.03 × 4,520.22
  4. Step 4: Simplify right side
    12,315.66x = 83,506,679.89
  5. Step 5: Solve for x
    x = 83,506,679.89/12,315.66
  6. Step 6: Final answer
    x = 6,780.53

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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.