Home / 35,985.20-53,977.80-12,608.60

Finding the Fourth Proportional to 35,985.20, 53,977.80 and 12,608.60

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Solution

The fourth proportional to 35,985.20, 53,977.80 and 12,608.60 is: 18,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,985.20 : 53,977.80 = 12,608.60 : x
  2. Step 2: Convert to fraction form
    35,985.20/53,977.80 = 12,608.60/x
  3. Step 3: Cross multiply
    35,985.20x = 53,977.80 × 12,608.60
  4. Step 4: Simplify right side
    35,985.20x = 680,584,489.08
  5. Step 5: Solve for x
    x = 680,584,489.08/35,985.20
  6. Step 6: Final answer
    x = 18,912.90

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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.