Home / 37,138.32-51,250.20-21,005.40

Finding the Fourth Proportional to 37,138.32, 51,250.20 and 21,005.40

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Solution

The fourth proportional to 37,138.32, 51,250.20 and 21,005.40 is: 28,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,138.32 : 51,250.20 = 21,005.40 : x
  2. Step 2: Convert to fraction form
    37,138.32/51,250.20 = 21,005.40/x
  3. Step 3: Cross multiply
    37,138.32x = 51,250.20 × 21,005.40
  4. Step 4: Simplify right side
    37,138.32x = 1,076,530,951.08
  5. Step 5: Solve for x
    x = 1,076,530,951.08/37,138.32
  6. Step 6: Final answer
    x = 28,987.07

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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.