Home / 19,690.20-29,486.70-13,080.60

Finding the Fourth Proportional to 19,690.20, 29,486.70 and 13,080.60

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Solution

The fourth proportional to 19,690.20, 29,486.70 and 13,080.60 is: 19,588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.20 : 29,486.70 = 13,080.60 : x
  2. Step 2: Convert to fraction form
    19,690.20/29,486.70 = 13,080.60/x
  3. Step 3: Cross multiply
    19,690.20x = 29,486.70 × 13,080.60
  4. Step 4: Simplify right side
    19,690.20x = 385,703,728.02
  5. Step 5: Solve for x
    x = 385,703,728.02/19,690.20
  6. Step 6: Final answer
    x = 19,588.61

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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.