Home / 37,905.80-52,308.87-21,138.80

Finding the Fourth Proportional to 37,905.80, 52,308.87 and 21,138.80

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Solution

The fourth proportional to 37,905.80, 52,308.87 and 21,138.80 is: 29,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,905.80 : 52,308.87 = 21,138.80 : x
  2. Step 2: Convert to fraction form
    37,905.80/52,308.87 = 21,138.80/x
  3. Step 3: Cross multiply
    37,905.80x = 52,308.87 × 21,138.80
  4. Step 4: Simplify right side
    37,905.80x = 1,105,746,741.16
  5. Step 5: Solve for x
    x = 1,105,746,741.16/37,905.80
  6. Step 6: Final answer
    x = 29,170.91

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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.