Home / 21,979.96-30,332.17-12,548.50

Finding the Fourth Proportional to 21,979.96, 30,332.17 and 12,548.50

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Solution

The fourth proportional to 21,979.96, 30,332.17 and 12,548.50 is: 17,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.96 : 30,332.17 = 12,548.50 : x
  2. Step 2: Convert to fraction form
    21,979.96/30,332.17 = 12,548.50/x
  3. Step 3: Cross multiply
    21,979.96x = 30,332.17 × 12,548.50
  4. Step 4: Simplify right side
    21,979.96x = 380,623,235.25
  5. Step 5: Solve for x
    x = 380,623,235.25/21,979.96
  6. Step 6: Final answer
    x = 17,316.83

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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.