Home / 30,377.07-41,889.69-20,305.53

Finding the Fourth Proportional to 30,377.07, 41,889.69 and 20,305.53

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Solution

The fourth proportional to 30,377.07, 41,889.69 and 20,305.53 is: 28,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,377.07 : 41,889.69 = 20,305.53 : x
  2. Step 2: Convert to fraction form
    30,377.07/41,889.69 = 20,305.53/x
  3. Step 3: Cross multiply
    30,377.07x = 41,889.69 × 20,305.53
  4. Step 4: Simplify right side
    30,377.07x = 850,592,356.99
  5. Step 5: Solve for x
    x = 850,592,356.99/30,377.07
  6. Step 6: Final answer
    x = 28,001.13

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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.