Home / 21,324.48-29,420.09-12,708.92

Finding the Fourth Proportional to 21,324.48, 29,420.09 and 12,708.92

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Solution

The fourth proportional to 21,324.48, 29,420.09 and 12,708.92 is: 17,533.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.48 : 29,420.09 = 12,708.92 : x
  2. Step 2: Convert to fraction form
    21,324.48/29,420.09 = 12,708.92/x
  3. Step 3: Cross multiply
    21,324.48x = 29,420.09 × 12,708.92
  4. Step 4: Simplify right side
    21,324.48x = 373,897,359.56
  5. Step 5: Solve for x
    x = 373,897,359.56/21,324.48
  6. Step 6: Final answer
    x = 17,533.72

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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.