Home / 20,321.57-28,038.36-13,950.11

Finding the Fourth Proportional to 20,321.57, 28,038.36 and 13,950.11

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Solution

The fourth proportional to 20,321.57, 28,038.36 and 13,950.11 is: 19,247.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.57 : 28,038.36 = 13,950.11 : x
  2. Step 2: Convert to fraction form
    20,321.57/28,038.36 = 13,950.11/x
  3. Step 3: Cross multiply
    20,321.57x = 28,038.36 × 13,950.11
  4. Step 4: Simplify right side
    20,321.57x = 391,138,206.22
  5. Step 5: Solve for x
    x = 391,138,206.22/20,321.57
  6. Step 6: Final answer
    x = 19,247.44

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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.