Home / 20,887.13-31,314.26-10,349.91

Finding the Fourth Proportional to 20,887.13, 31,314.26 and 10,349.91

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Solution

The fourth proportional to 20,887.13, 31,314.26 and 10,349.91 is: 15,516.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.13 : 31,314.26 = 10,349.91 : x
  2. Step 2: Convert to fraction form
    20,887.13/31,314.26 = 10,349.91/x
  3. Step 3: Cross multiply
    20,887.13x = 31,314.26 × 10,349.91
  4. Step 4: Simplify right side
    20,887.13x = 324,099,798.59
  5. Step 5: Solve for x
    x = 324,099,798.59/20,887.13
  6. Step 6: Final answer
    x = 15,516.72

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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.