Home / 26,720.20-40,080.30-12,870.60

Finding the Fourth Proportional to 26,720.20, 40,080.30 and 12,870.60

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Solution

The fourth proportional to 26,720.20, 40,080.30 and 12,870.60 is: 19,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,720.20 : 40,080.30 = 12,870.60 : x
  2. Step 2: Convert to fraction form
    26,720.20/40,080.30 = 12,870.60/x
  3. Step 3: Cross multiply
    26,720.20x = 40,080.30 × 12,870.60
  4. Step 4: Simplify right side
    26,720.20x = 515,857,509.18
  5. Step 5: Solve for x
    x = 515,857,509.18/26,720.20
  6. Step 6: Final answer
    x = 19,305.90

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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.