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Finding the Fourth Proportional to 37,689.21, 52,012.89 and 20,922.21

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Solution

The fourth proportional to 37,689.21, 52,012.89 and 20,922.21 is: 28,873.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,689.21 : 52,012.89 = 20,922.21 : x
  2. Step 2: Convert to fraction form
    37,689.21/52,012.89 = 20,922.21/x
  3. Step 3: Cross multiply
    37,689.21x = 52,012.89 × 20,922.21
  4. Step 4: Simplify right side
    37,689.21x = 1,088,224,607.29
  5. Step 5: Solve for x
    x = 1,088,224,607.29/37,689.21
  6. Step 6: Final answer
    x = 28,873.64

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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.