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Finding the Fourth Proportional to 35,860.78, 53,798.46 and 12,489.04

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Solution

The fourth proportional to 35,860.78, 53,798.46 and 12,489.04 is: 18,736.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,860.78 : 53,798.46 = 12,489.04 : x
  2. Step 2: Convert to fraction form
    35,860.78/53,798.46 = 12,489.04/x
  3. Step 3: Cross multiply
    35,860.78x = 53,798.46 × 12,489.04
  4. Step 4: Simplify right side
    35,860.78x = 671,891,118.88
  5. Step 5: Solve for x
    x = 671,891,118.88/35,860.78
  6. Step 6: Final answer
    x = 18,736.10

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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.