Home / 21,140.62-29,174.27-12,755.50

Finding the Fourth Proportional to 21,140.62, 29,174.27 and 12,755.50

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Solution

The fourth proportional to 21,140.62, 29,174.27 and 12,755.50 is: 17,602.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.62 : 29,174.27 = 12,755.50 : x
  2. Step 2: Convert to fraction form
    21,140.62/29,174.27 = 12,755.50/x
  3. Step 3: Cross multiply
    21,140.62x = 29,174.27 × 12,755.50
  4. Step 4: Simplify right side
    21,140.62x = 372,132,400.99
  5. Step 5: Solve for x
    x = 372,132,400.99/21,140.62
  6. Step 6: Final answer
    x = 17,602.72

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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.