Home / 30,326.90-45,470.78-12,792.02

Finding the Fourth Proportional to 30,326.90, 45,470.78 and 12,792.02

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Solution

The fourth proportional to 30,326.90, 45,470.78 and 12,792.02 is: 19,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,326.90 : 45,470.78 = 12,792.02 : x
  2. Step 2: Convert to fraction form
    30,326.90/45,470.78 = 12,792.02/x
  3. Step 3: Cross multiply
    30,326.90x = 45,470.78 × 12,792.02
  4. Step 4: Simplify right side
    30,326.90x = 581,663,127.18
  5. Step 5: Solve for x
    x = 581,663,127.18/30,326.90
  6. Step 6: Final answer
    x = 19,179.78

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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.