Home / 20,970.63-31,446.72-11,107.61

Finding the Fourth Proportional to 20,970.63, 31,446.72 and 11,107.61

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Solution

The fourth proportional to 20,970.63, 31,446.72 and 11,107.61 is: 16,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.63 : 31,446.72 = 11,107.61 : x
  2. Step 2: Convert to fraction form
    20,970.63/31,446.72 = 11,107.61/x
  3. Step 3: Cross multiply
    20,970.63x = 31,446.72 × 11,107.61
  4. Step 4: Simplify right side
    20,970.63x = 349,297,744.31
  5. Step 5: Solve for x
    x = 349,297,744.31/20,970.63
  6. Step 6: Final answer
    x = 16,656.52

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1.5x scale

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.