Home / 21,108.48-29,131.20-12,033.60

Finding the Fourth Proportional to 21,108.48, 29,131.20 and 12,033.60

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Solution

The fourth proportional to 21,108.48, 29,131.20 and 12,033.60 is: 16,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.48 : 29,131.20 = 12,033.60 : x
  2. Step 2: Convert to fraction form
    21,108.48/29,131.20 = 12,033.60/x
  3. Step 3: Cross multiply
    21,108.48x = 29,131.20 × 12,033.60
  4. Step 4: Simplify right side
    21,108.48x = 350,553,208.32
  5. Step 5: Solve for x
    x = 350,553,208.32/21,108.48
  6. Step 6: Final answer
    x = 16,607.22

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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.