Home / 20,349.16-28,086.18-11,970.44

Finding the Fourth Proportional to 20,349.16, 28,086.18 and 11,970.44

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Solution

The fourth proportional to 20,349.16, 28,086.18 and 11,970.44 is: 16,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.16 : 28,086.18 = 11,970.44 : x
  2. Step 2: Convert to fraction form
    20,349.16/28,086.18 = 11,970.44/x
  3. Step 3: Cross multiply
    20,349.16x = 28,086.18 × 11,970.44
  4. Step 4: Simplify right side
    20,349.16x = 336,203,932.52
  5. Step 5: Solve for x
    x = 336,203,932.52/20,349.16
  6. Step 6: Final answer
    x = 16,521.76

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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.