Home / 19,979.72-29,982.95-8,292.93

Finding the Fourth Proportional to 19,979.72, 29,982.95 and 8,292.93

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Solution

The fourth proportional to 19,979.72, 29,982.95 and 8,292.93 is: 12,444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.72 : 29,982.95 = 8,292.93 : x
  2. Step 2: Convert to fraction form
    19,979.72/29,982.95 = 8,292.93/x
  3. Step 3: Cross multiply
    19,979.72x = 29,982.95 × 8,292.93
  4. Step 4: Simplify right side
    19,979.72x = 248,646,464.08
  5. Step 5: Solve for x
    x = 248,646,464.08/19,979.72
  6. Step 6: Final answer
    x = 12,444.95

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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.