Home / 31,189.86-43,027.02-22,678.79

Finding the Fourth Proportional to 31,189.86, 43,027.02 and 22,678.79

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Solution

The fourth proportional to 31,189.86, 43,027.02 and 22,678.79 is: 31,285.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,189.86 : 43,027.02 = 22,678.79 : x
  2. Step 2: Convert to fraction form
    31,189.86/43,027.02 = 22,678.79/x
  3. Step 3: Cross multiply
    31,189.86x = 43,027.02 × 22,678.79
  4. Step 4: Simplify right side
    31,189.86x = 975,800,535.77
  5. Step 5: Solve for x
    x = 975,800,535.77/31,189.86
  6. Step 6: Final answer
    x = 31,285.83

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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.