Home / 15,451.10-21,340.04-10,406.56

Finding the Fourth Proportional to 15,451.10, 21,340.04 and 10,406.56

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Solution

The fourth proportional to 15,451.10, 21,340.04 and 10,406.56 is: 14,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.10 : 21,340.04 = 10,406.56 : x
  2. Step 2: Convert to fraction form
    15,451.10/21,340.04 = 10,406.56/x
  3. Step 3: Cross multiply
    15,451.10x = 21,340.04 × 10,406.56
  4. Step 4: Simplify right side
    15,451.10x = 222,076,406.66
  5. Step 5: Solve for x
    x = 222,076,406.66/15,451.10
  6. Step 6: Final answer
    x = 14,372.85

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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.