Home / 20,897.12-31,338.39-9,203.96

Finding the Fourth Proportional to 20,897.12, 31,338.39 and 9,203.96

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Solution

The fourth proportional to 20,897.12, 31,338.39 and 9,203.96 is: 13,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.12 : 31,338.39 = 9,203.96 : x
  2. Step 2: Convert to fraction form
    20,897.12/31,338.39 = 9,203.96/x
  3. Step 3: Cross multiply
    20,897.12x = 31,338.39 × 9,203.96
  4. Step 4: Simplify right side
    20,897.12x = 288,437,210.43
  5. Step 5: Solve for x
    x = 288,437,210.43/20,897.12
  6. Step 6: Final answer
    x = 13,802.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.