Home / 15,446.20-21,317.10-12,923.86

Finding the Fourth Proportional to 15,446.20, 21,317.10 and 12,923.86

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Solution

The fourth proportional to 15,446.20, 21,317.10 and 12,923.86 is: 17,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.20 : 21,317.10 = 12,923.86 : x
  2. Step 2: Convert to fraction form
    15,446.20/21,317.10 = 12,923.86/x
  3. Step 3: Cross multiply
    15,446.20x = 21,317.10 × 12,923.86
  4. Step 4: Simplify right side
    15,446.20x = 275,499,216.01
  5. Step 5: Solve for x
    x = 275,499,216.01/15,446.20
  6. Step 6: Final answer
    x = 17,836.05

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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.