Home / 42,490.90-63,736.33-20,236.82

Finding the Fourth Proportional to 42,490.90, 63,736.33 and 20,236.82

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Solution

The fourth proportional to 42,490.90, 63,736.33 and 20,236.82 is: 30,355.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.90 : 63,736.33 = 20,236.82 : x
  2. Step 2: Convert to fraction form
    42,490.90/63,736.33 = 20,236.82/x
  3. Step 3: Cross multiply
    42,490.90x = 63,736.33 × 20,236.82
  4. Step 4: Simplify right side
    42,490.90x = 1,289,820,637.67
  5. Step 5: Solve for x
    x = 1,289,820,637.67/42,490.90
  6. Step 6: Final answer
    x = 30,355.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.