Home / 21,320.48-29,421.60-11,629.56

Finding the Fourth Proportional to 21,320.48, 29,421.60 and 11,629.56

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Solution

The fourth proportional to 21,320.48, 29,421.60 and 11,629.56 is: 16,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.48 : 29,421.60 = 11,629.56 : x
  2. Step 2: Convert to fraction form
    21,320.48/29,421.60 = 11,629.56/x
  3. Step 3: Cross multiply
    21,320.48x = 29,421.60 × 11,629.56
  4. Step 4: Simplify right side
    21,320.48x = 342,160,262.50
  5. Step 5: Solve for x
    x = 342,160,262.50/21,320.48
  6. Step 6: Final answer
    x = 16,048.43

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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.