Home / 19,983.48-29,990.24-7,515.80

Finding the Fourth Proportional to 19,983.48, 29,990.24 and 7,515.80

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Solution

The fourth proportional to 19,983.48, 29,990.24 and 7,515.80 is: 11,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.48 : 29,990.24 = 7,515.80 : x
  2. Step 2: Convert to fraction form
    19,983.48/29,990.24 = 7,515.80/x
  3. Step 3: Cross multiply
    19,983.48x = 29,990.24 × 7,515.80
  4. Step 4: Simplify right side
    19,983.48x = 225,400,645.79
  5. Step 5: Solve for x
    x = 225,400,645.79/19,983.48
  6. Step 6: Final answer
    x = 11,279.35

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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.