Home / 30,350.77-41,890.76-19,721.95

Finding the Fourth Proportional to 30,350.77, 41,890.76 and 19,721.95

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Solution

The fourth proportional to 30,350.77, 41,890.76 and 19,721.95 is: 27,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.77 : 41,890.76 = 19,721.95 : x
  2. Step 2: Convert to fraction form
    30,350.77/41,890.76 = 19,721.95/x
  3. Step 3: Cross multiply
    30,350.77x = 41,890.76 × 19,721.95
  4. Step 4: Simplify right side
    30,350.77x = 826,167,474.18
  5. Step 5: Solve for x
    x = 826,167,474.18/30,350.77
  6. Step 6: Final answer
    x = 27,220.64

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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.