Home / 42,403.73-63,614.84-12,820.81

Finding the Fourth Proportional to 42,403.73, 63,614.84 and 12,820.81

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Solution

The fourth proportional to 42,403.73, 63,614.84 and 12,820.81 is: 19,234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,403.73 : 63,614.84 = 12,820.81 : x
  2. Step 2: Convert to fraction form
    42,403.73/63,614.84 = 12,820.81/x
  3. Step 3: Cross multiply
    42,403.73x = 63,614.84 × 12,820.81
  4. Step 4: Simplify right side
    42,403.73x = 815,593,776.82
  5. Step 5: Solve for x
    x = 815,593,776.82/42,403.73
  6. Step 6: Final answer
    x = 19,234.01

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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.