Home / 19,909.08-29,877.39-8,222.40

Finding the Fourth Proportional to 19,909.08, 29,877.39 and 8,222.40

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Solution

The fourth proportional to 19,909.08, 29,877.39 and 8,222.40 is: 12,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.08 : 29,877.39 = 8,222.40 : x
  2. Step 2: Convert to fraction form
    19,909.08/29,877.39 = 8,222.40/x
  3. Step 3: Cross multiply
    19,909.08x = 29,877.39 × 8,222.40
  4. Step 4: Simplify right side
    19,909.08x = 245,663,851.54
  5. Step 5: Solve for x
    x = 245,663,851.54/19,909.08
  6. Step 6: Final answer
    x = 12,339.29

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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.