Home / 20,325.76-28,043.98-13,953.96

Finding the Fourth Proportional to 20,325.76, 28,043.98 and 13,953.96

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Solution

The fourth proportional to 20,325.76, 28,043.98 and 13,953.96 is: 19,252.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.76 : 28,043.98 = 13,953.96 : x
  2. Step 2: Convert to fraction form
    20,325.76/28,043.98 = 13,953.96/x
  3. Step 3: Cross multiply
    20,325.76x = 28,043.98 × 13,953.96
  4. Step 4: Simplify right side
    20,325.76x = 391,324,575.16
  5. Step 5: Solve for x
    x = 391,324,575.16/20,325.76
  6. Step 6: Final answer
    x = 19,252.64

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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.