Home / 12,639.04-18,958.48-4,315.04

Finding the Fourth Proportional to 12,639.04, 18,958.48 and 4,315.04

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Solution

The fourth proportional to 12,639.04, 18,958.48 and 4,315.04 is: 6,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.04 : 18,958.48 = 4,315.04 : x
  2. Step 2: Convert to fraction form
    12,639.04/18,958.48 = 4,315.04/x
  3. Step 3: Cross multiply
    12,639.04x = 18,958.48 × 4,315.04
  4. Step 4: Simplify right side
    12,639.04x = 81,806,599.54
  5. Step 5: Solve for x
    x = 81,806,599.54/12,639.04
  6. Step 6: Final answer
    x = 6,472.53

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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.