Home / 12,885.61-19,329.32-4,121.23

Finding the Fourth Proportional to 12,885.61, 19,329.32 and 4,121.23

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Solution

The fourth proportional to 12,885.61, 19,329.32 and 4,121.23 is: 6,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.61 : 19,329.32 = 4,121.23 : x
  2. Step 2: Convert to fraction form
    12,885.61/19,329.32 = 4,121.23/x
  3. Step 3: Cross multiply
    12,885.61x = 19,329.32 × 4,121.23
  4. Step 4: Simplify right side
    12,885.61x = 79,660,573.46
  5. Step 5: Solve for x
    x = 79,660,573.46/12,885.61
  6. Step 6: Final answer
    x = 6,182.13

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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.