Home / 19,560.12-29,369.52-18,879.72

Finding the Fourth Proportional to 19,560.12, 29,369.52 and 18,879.72

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Solution

The fourth proportional to 19,560.12, 29,369.52 and 18,879.72 is: 28,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,560.12 : 29,369.52 = 18,879.72 : x
  2. Step 2: Convert to fraction form
    19,560.12/29,369.52 = 18,879.72/x
  3. Step 3: Cross multiply
    19,560.12x = 29,369.52 × 18,879.72
  4. Step 4: Simplify right side
    19,560.12x = 554,488,314.13
  5. Step 5: Solve for x
    x = 554,488,314.13/19,560.12
  6. Step 6: Final answer
    x = 28,347.90

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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.