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Finding the Fourth Proportional to 35,881.52, 53,820.07 and 13,387.82

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Solution

The fourth proportional to 35,881.52, 53,820.07 and 13,387.82 is: 20,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,881.52 : 53,820.07 = 13,387.82 : x
  2. Step 2: Convert to fraction form
    35,881.52/53,820.07 = 13,387.82/x
  3. Step 3: Cross multiply
    35,881.52x = 53,820.07 × 13,387.82
  4. Step 4: Simplify right side
    35,881.52x = 720,533,106.98
  5. Step 5: Solve for x
    x = 720,533,106.98/35,881.52
  6. Step 6: Final answer
    x = 20,080.90

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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.