Home / 35,986.20-53,979.30-12,609.60

Finding the Fourth Proportional to 35,986.20, 53,979.30 and 12,609.60

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Solution

The fourth proportional to 35,986.20, 53,979.30 and 12,609.60 is: 18,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,986.20 : 53,979.30 = 12,609.60 : x
  2. Step 2: Convert to fraction form
    35,986.20/53,979.30 = 12,609.60/x
  3. Step 3: Cross multiply
    35,986.20x = 53,979.30 × 12,609.60
  4. Step 4: Simplify right side
    35,986.20x = 680,657,381.28
  5. Step 5: Solve for x
    x = 680,657,381.28/35,986.20
  6. Step 6: Final answer
    x = 18,914.40

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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.