Home / 34,129.70-47,128.08-21,404.30

Finding the Fourth Proportional to 34,129.70, 47,128.08 and 21,404.30

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Solution

The fourth proportional to 34,129.70, 47,128.08 and 21,404.30 is: 29,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,129.70 : 47,128.08 = 21,404.30 : x
  2. Step 2: Convert to fraction form
    34,129.70/47,128.08 = 21,404.30/x
  3. Step 3: Cross multiply
    34,129.70x = 47,128.08 × 21,404.30
  4. Step 4: Simplify right side
    34,129.70x = 1,008,743,562.74
  5. Step 5: Solve for x
    x = 1,008,743,562.74/34,129.70
  6. Step 6: Final answer
    x = 29,556.18

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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.