Home / 12,681.06-19,021.13-3,915.98

Finding the Fourth Proportional to 12,681.06, 19,021.13 and 3,915.98

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Solution

The fourth proportional to 12,681.06, 19,021.13 and 3,915.98 is: 5,873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.06 : 19,021.13 = 3,915.98 : x
  2. Step 2: Convert to fraction form
    12,681.06/19,021.13 = 3,915.98/x
  3. Step 3: Cross multiply
    12,681.06x = 19,021.13 × 3,915.98
  4. Step 4: Simplify right side
    12,681.06x = 74,486,335.99
  5. Step 5: Solve for x
    x = 74,486,335.99/12,681.06
  6. Step 6: Final answer
    x = 5,873.83

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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.