Home / 21,133.08-29,161.17-12,180.48

Finding the Fourth Proportional to 21,133.08, 29,161.17 and 12,180.48

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Solution

The fourth proportional to 21,133.08, 29,161.17 and 12,180.48 is: 16,807.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.08 : 29,161.17 = 12,180.48 : x
  2. Step 2: Convert to fraction form
    21,133.08/29,161.17 = 12,180.48/x
  3. Step 3: Cross multiply
    21,133.08x = 29,161.17 × 12,180.48
  4. Step 4: Simplify right side
    21,133.08x = 355,197,047.96
  5. Step 5: Solve for x
    x = 355,197,047.96/21,133.08
  6. Step 6: Final answer
    x = 16,807.63

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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.