Home / 39,295.86-54,227.76-21,390.56

Finding the Fourth Proportional to 39,295.86, 54,227.76 and 21,390.56

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Solution

The fourth proportional to 39,295.86, 54,227.76 and 21,390.56 is: 29,518.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,295.86 : 54,227.76 = 21,390.56 : x
  2. Step 2: Convert to fraction form
    39,295.86/54,227.76 = 21,390.56/x
  3. Step 3: Cross multiply
    39,295.86x = 54,227.76 × 21,390.56
  4. Step 4: Simplify right side
    39,295.86x = 1,159,962,153.95
  5. Step 5: Solve for x
    x = 1,159,962,153.95/39,295.86
  6. Step 6: Final answer
    x = 29,518.69

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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.