Home / 36,979.64-55,478.21-12,019.69

Finding the Fourth Proportional to 36,979.64, 55,478.21 and 12,019.69

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Solution

The fourth proportional to 36,979.64, 55,478.21 and 12,019.69 is: 18,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,979.64 : 55,478.21 = 12,019.69 : x
  2. Step 2: Convert to fraction form
    36,979.64/55,478.21 = 12,019.69/x
  3. Step 3: Cross multiply
    36,979.64x = 55,478.21 × 12,019.69
  4. Step 4: Simplify right side
    36,979.64x = 666,830,885.95
  5. Step 5: Solve for x
    x = 666,830,885.95/36,979.64
  6. Step 6: Final answer
    x = 18,032.38

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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.