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Finding the Fourth Proportional to 35,634.52, 53,459.88 and 18,985.78

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Solution

The fourth proportional to 35,634.52, 53,459.88 and 18,985.78 is: 28,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,634.52 : 53,459.88 = 18,985.78 : x
  2. Step 2: Convert to fraction form
    35,634.52/53,459.88 = 18,985.78/x
  3. Step 3: Cross multiply
    35,634.52x = 53,459.88 × 18,985.78
  4. Step 4: Simplify right side
    35,634.52x = 1,014,977,520.51
  5. Step 5: Solve for x
    x = 1,014,977,520.51/35,634.52
  6. Step 6: Final answer
    x = 28,482.99

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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.