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Finding the Fourth Proportional to 35,573.76, 53,344.20 and 20,787.21

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Solution

The fourth proportional to 35,573.76, 53,344.20 and 20,787.21 is: 31,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,573.76 : 53,344.20 = 20,787.21 : x
  2. Step 2: Convert to fraction form
    35,573.76/53,344.20 = 20,787.21/x
  3. Step 3: Cross multiply
    35,573.76x = 53,344.20 × 20,787.21
  4. Step 4: Simplify right side
    35,573.76x = 1,108,877,087.68
  5. Step 5: Solve for x
    x = 1,108,877,087.68/35,573.76
  6. Step 6: Final answer
    x = 31,171.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.