Home / 30,440.20-45,663.95-12,907.75

Finding the Fourth Proportional to 30,440.20, 45,663.95 and 12,907.75

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Solution

The fourth proportional to 30,440.20, 45,663.95 and 12,907.75 is: 19,363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.20 : 45,663.95 = 12,907.75 : x
  2. Step 2: Convert to fraction form
    30,440.20/45,663.95 = 12,907.75/x
  3. Step 3: Cross multiply
    30,440.20x = 45,663.95 × 12,907.75
  4. Step 4: Simplify right side
    30,440.20x = 589,418,850.61
  5. Step 5: Solve for x
    x = 589,418,850.61/30,440.20
  6. Step 6: Final answer
    x = 19,363.17

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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.