Home / 20,963.31-28,929.59-12,010.62

Finding the Fourth Proportional to 20,963.31, 28,929.59 and 12,010.62

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Solution

The fourth proportional to 20,963.31, 28,929.59 and 12,010.62 is: 16,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.31 : 28,929.59 = 12,010.62 : x
  2. Step 2: Convert to fraction form
    20,963.31/28,929.59 = 12,010.62/x
  3. Step 3: Cross multiply
    20,963.31x = 28,929.59 × 12,010.62
  4. Step 4: Simplify right side
    20,963.31x = 347,462,252.19
  5. Step 5: Solve for x
    x = 347,462,252.19/20,963.31
  6. Step 6: Final answer
    x = 16,574.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.