Home / 38,412.86-57,606.30-18,678.86

Finding the Fourth Proportional to 38,412.86, 57,606.30 and 18,678.86

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Solution

The fourth proportional to 38,412.86, 57,606.30 and 18,678.86 is: 28,011.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,412.86 : 57,606.30 = 18,678.86 : x
  2. Step 2: Convert to fraction form
    38,412.86/57,606.30 = 18,678.86/x
  3. Step 3: Cross multiply
    38,412.86x = 57,606.30 × 18,678.86
  4. Step 4: Simplify right side
    38,412.86x = 1,076,020,012.82
  5. Step 5: Solve for x
    x = 1,076,020,012.82/38,412.86
  6. Step 6: Final answer
    x = 28,011.97

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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.