Home / 12,219.53-18,328.95-3,900.06

Finding the Fourth Proportional to 12,219.53, 18,328.95 and 3,900.06

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Solution

The fourth proportional to 12,219.53, 18,328.95 and 3,900.06 is: 5,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.53 : 18,328.95 = 3,900.06 : x
  2. Step 2: Convert to fraction form
    12,219.53/18,328.95 = 3,900.06/x
  3. Step 3: Cross multiply
    12,219.53x = 18,328.95 × 3,900.06
  4. Step 4: Simplify right side
    12,219.53x = 71,484,004.74
  5. Step 5: Solve for x
    x = 71,484,004.74/12,219.53
  6. Step 6: Final answer
    x = 5,849.98

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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.