Home / 20,697.45-31,028.76-9,001.86

Finding the Fourth Proportional to 20,697.45, 31,028.76 and 9,001.86

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Solution

The fourth proportional to 20,697.45, 31,028.76 and 9,001.86 is: 13,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.45 : 31,028.76 = 9,001.86 : x
  2. Step 2: Convert to fraction form
    20,697.45/31,028.76 = 9,001.86/x
  3. Step 3: Cross multiply
    20,697.45x = 31,028.76 × 9,001.86
  4. Step 4: Simplify right side
    20,697.45x = 279,316,553.49
  5. Step 5: Solve for x
    x = 279,316,553.49/20,697.45
  6. Step 6: Final answer
    x = 13,495.22

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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.