Home / 30,349.77-41,889.39-19,720.95

Finding the Fourth Proportional to 30,349.77, 41,889.39 and 19,720.95

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Solution

The fourth proportional to 30,349.77, 41,889.39 and 19,720.95 is: 27,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.77 : 41,889.39 = 19,720.95 : x
  2. Step 2: Convert to fraction form
    30,349.77/41,889.39 = 19,720.95/x
  3. Step 3: Cross multiply
    30,349.77x = 41,889.39 × 19,720.95
  4. Step 4: Simplify right side
    30,349.77x = 826,098,257.67
  5. Step 5: Solve for x
    x = 826,098,257.67/30,349.77
  6. Step 6: Final answer
    x = 27,219.26

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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.