Home / 19,993.22-29,987.45-15,555.34

Finding the Fourth Proportional to 19,993.22, 29,987.45 and 15,555.34

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Solution

The fourth proportional to 19,993.22, 29,987.45 and 15,555.34 is: 23,331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.22 : 29,987.45 = 15,555.34 : x
  2. Step 2: Convert to fraction form
    19,993.22/29,987.45 = 15,555.34/x
  3. Step 3: Cross multiply
    19,993.22x = 29,987.45 × 15,555.34
  4. Step 4: Simplify right side
    19,993.22x = 466,464,752.77
  5. Step 5: Solve for x
    x = 466,464,752.77/19,993.22
  6. Step 6: Final answer
    x = 23,331.15

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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.