Home / 20,568.94-28,385.34-11,137.70

Finding the Fourth Proportional to 20,568.94, 28,385.34 and 11,137.70

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Solution

The fourth proportional to 20,568.94, 28,385.34 and 11,137.70 is: 15,370.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.94 : 28,385.34 = 11,137.70 : x
  2. Step 2: Convert to fraction form
    20,568.94/28,385.34 = 11,137.70/x
  3. Step 3: Cross multiply
    20,568.94x = 28,385.34 × 11,137.70
  4. Step 4: Simplify right side
    20,568.94x = 316,147,430.51
  5. Step 5: Solve for x
    x = 316,147,430.51/20,568.94
  6. Step 6: Final answer
    x = 15,370.14

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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.