Home / 19,915.86-29,871.36-8,227.56

Finding the Fourth Proportional to 19,915.86, 29,871.36 and 8,227.56

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Solution

The fourth proportional to 19,915.86, 29,871.36 and 8,227.56 is: 12,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.86 : 29,871.36 = 8,227.56 : x
  2. Step 2: Convert to fraction form
    19,915.86/29,871.36 = 8,227.56/x
  3. Step 3: Cross multiply
    19,915.86x = 29,871.36 × 8,227.56
  4. Step 4: Simplify right side
    19,915.86x = 245,768,406.68
  5. Step 5: Solve for x
    x = 245,768,406.68/19,915.86
  6. Step 6: Final answer
    x = 12,340.34

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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.