Home / 19,683.40-29,519.70-7,997.80

Finding the Fourth Proportional to 19,683.40, 29,519.70 and 7,997.80

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Solution

The fourth proportional to 19,683.40, 29,519.70 and 7,997.80 is: 11,994.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.40 : 29,519.70 = 7,997.80 : x
  2. Step 2: Convert to fraction form
    19,683.40/29,519.70 = 7,997.80/x
  3. Step 3: Cross multiply
    19,683.40x = 29,519.70 × 7,997.80
  4. Step 4: Simplify right side
    19,683.40x = 236,092,656.66
  5. Step 5: Solve for x
    x = 236,092,656.66/19,683.40
  6. Step 6: Final answer
    x = 11,994.51

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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.