Home / 38,178.86-57,254.56-13,212.12

Finding the Fourth Proportional to 38,178.86, 57,254.56 and 13,212.12

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Solution

The fourth proportional to 38,178.86, 57,254.56 and 13,212.12 is: 19,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,178.86 : 57,254.56 = 13,212.12 : x
  2. Step 2: Convert to fraction form
    38,178.86/57,254.56 = 13,212.12/x
  3. Step 3: Cross multiply
    38,178.86x = 57,254.56 × 13,212.12
  4. Step 4: Simplify right side
    38,178.86x = 756,454,298.94
  5. Step 5: Solve for x
    x = 756,454,298.94/38,178.86
  6. Step 6: Final answer
    x = 19,813.44

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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.