Home / 21,579.96-29,778.22-12,019.52

Finding the Fourth Proportional to 21,579.96, 29,778.22 and 12,019.52

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Solution

The fourth proportional to 21,579.96, 29,778.22 and 12,019.52 is: 16,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.96 : 29,778.22 = 12,019.52 : x
  2. Step 2: Convert to fraction form
    21,579.96/29,778.22 = 12,019.52/x
  3. Step 3: Cross multiply
    21,579.96x = 29,778.22 × 12,019.52
  4. Step 4: Simplify right side
    21,579.96x = 357,920,000.32
  5. Step 5: Solve for x
    x = 357,920,000.32/21,579.96
  6. Step 6: Final answer
    x = 16,585.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.