Home / 21,139.00-29,094.14-18,120.94

Finding the Fourth Proportional to 21,139.00, 29,094.14 and 18,120.94

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Solution

The fourth proportional to 21,139.00, 29,094.14 and 18,120.94 is: 24,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.00 : 29,094.14 = 18,120.94 : x
  2. Step 2: Convert to fraction form
    21,139.00/29,094.14 = 18,120.94/x
  3. Step 3: Cross multiply
    21,139.00x = 29,094.14 × 18,120.94
  4. Step 4: Simplify right side
    21,139.00x = 527,213,137.86
  5. Step 5: Solve for x
    x = 527,213,137.86/21,139.00
  6. Step 6: Final answer
    x = 24,940.31

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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.