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Finding the Fourth Proportional to 37,131, 51,240.90 and 20,364.12

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Solution

The fourth proportional to 37,131, 51,240.90 and 20,364.12 is: 28,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,131 : 51,240.90 = 20,364.12 : x
  2. Step 2: Convert to fraction form
    37,131/51,240.90 = 20,364.12/x
  3. Step 3: Cross multiply
    37,131x = 51,240.90 × 20,364.12
  4. Step 4: Simplify right side
    37,131x = 1,043,475,836.51
  5. Step 5: Solve for x
    x = 1,043,475,836.51/37,131
  6. Step 6: Final answer
    x = 28,102.55

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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.