Home / 20,437.19-28,203.41-11,939.79

Finding the Fourth Proportional to 20,437.19, 28,203.41 and 11,939.79

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Solution

The fourth proportional to 20,437.19, 28,203.41 and 11,939.79 is: 16,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.19 : 28,203.41 = 11,939.79 : x
  2. Step 2: Convert to fraction form
    20,437.19/28,203.41 = 11,939.79/x
  3. Step 3: Cross multiply
    20,437.19x = 28,203.41 × 11,939.79
  4. Step 4: Simplify right side
    20,437.19x = 336,742,822.53
  5. Step 5: Solve for x
    x = 336,742,822.53/20,437.19
  6. Step 6: Final answer
    x = 16,476.97

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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.