Home / 36,206.40-49,966.20-21,108.78

Finding the Fourth Proportional to 36,206.40, 49,966.20 and 21,108.78

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Solution

The fourth proportional to 36,206.40, 49,966.20 and 21,108.78 is: 29,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,206.40 : 49,966.20 = 21,108.78 : x
  2. Step 2: Convert to fraction form
    36,206.40/49,966.20 = 21,108.78/x
  3. Step 3: Cross multiply
    36,206.40x = 49,966.20 × 21,108.78
  4. Step 4: Simplify right side
    36,206.40x = 1,054,725,523.24
  5. Step 5: Solve for x
    x = 1,054,725,523.24/36,206.40
  6. Step 6: Final answer
    x = 29,130.91

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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.