Home / 37,112.20-51,213-20,979.16

Finding the Fourth Proportional to 37,112.20, 51,213 and 20,979.16

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Solution

The fourth proportional to 37,112.20, 51,213 and 20,979.16 is: 28,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,112.20 : 51,213 = 20,979.16 : x
  2. Step 2: Convert to fraction form
    37,112.20/51,213 = 20,979.16/x
  3. Step 3: Cross multiply
    37,112.20x = 51,213 × 20,979.16
  4. Step 4: Simplify right side
    37,112.20x = 1,074,405,721.08
  5. Step 5: Solve for x
    x = 1,074,405,721.08/37,112.20
  6. Step 6: Final answer
    x = 28,950.20

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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.