Home / 19,823.22-29,746.62-7,978.08

Finding the Fourth Proportional to 19,823.22, 29,746.62 and 7,978.08

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Solution

The fourth proportional to 19,823.22, 29,746.62 and 7,978.08 is: 11,971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,823.22 : 29,746.62 = 7,978.08 : x
  2. Step 2: Convert to fraction form
    19,823.22/29,746.62 = 7,978.08/x
  3. Step 3: Cross multiply
    19,823.22x = 29,746.62 × 7,978.08
  4. Step 4: Simplify right side
    19,823.22x = 237,320,914.09
  5. Step 5: Solve for x
    x = 237,320,914.09/19,823.22
  6. Step 6: Final answer
    x = 11,971.87

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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.