Home / 42,491.75-63,738.98-12,909.84

Finding the Fourth Proportional to 42,491.75, 63,738.98 and 12,909.84

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Solution

The fourth proportional to 42,491.75, 63,738.98 and 12,909.84 is: 19,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,491.75 : 63,738.98 = 12,909.84 : x
  2. Step 2: Convert to fraction form
    42,491.75/63,738.98 = 12,909.84/x
  3. Step 3: Cross multiply
    42,491.75x = 63,738.98 × 12,909.84
  4. Step 4: Simplify right side
    42,491.75x = 822,860,128.36
  5. Step 5: Solve for x
    x = 822,860,128.36/42,491.75
  6. Step 6: Final answer
    x = 19,365.17

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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.