Home / 20,687.99-31,036.85-5,897.12

Finding the Fourth Proportional to 20,687.99, 31,036.85 and 5,897.12

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Solution

The fourth proportional to 20,687.99, 31,036.85 and 5,897.12 is: 8,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.99 : 31,036.85 = 5,897.12 : x
  2. Step 2: Convert to fraction form
    20,687.99/31,036.85 = 5,897.12/x
  3. Step 3: Cross multiply
    20,687.99x = 31,036.85 × 5,897.12
  4. Step 4: Simplify right side
    20,687.99x = 183,028,099.09
  5. Step 5: Solve for x
    x = 183,028,099.09/20,687.99
  6. Step 6: Final answer
    x = 8,847.07

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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.