Home / 26,643.90-39,913.20-13,505.70

Finding the Fourth Proportional to 26,643.90, 39,913.20 and 13,505.70

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Solution

The fourth proportional to 26,643.90, 39,913.20 and 13,505.70 is: 20,231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,643.90 : 39,913.20 = 13,505.70 : x
  2. Step 2: Convert to fraction form
    26,643.90/39,913.20 = 13,505.70/x
  3. Step 3: Cross multiply
    26,643.90x = 39,913.20 × 13,505.70
  4. Step 4: Simplify right side
    26,643.90x = 539,055,705.24
  5. Step 5: Solve for x
    x = 539,055,705.24/26,643.90
  6. Step 6: Final answer
    x = 20,231.86

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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.