Home / 39,000.78-53,820.92-21,095.83

Finding the Fourth Proportional to 39,000.78, 53,820.92 and 21,095.83

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Solution

The fourth proportional to 39,000.78, 53,820.92 and 21,095.83 is: 29,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,000.78 : 53,820.92 = 21,095.83 : x
  2. Step 2: Convert to fraction form
    39,000.78/53,820.92 = 21,095.83/x
  3. Step 3: Cross multiply
    39,000.78x = 53,820.92 × 21,095.83
  4. Step 4: Simplify right side
    39,000.78x = 1,135,396,978.76
  5. Step 5: Solve for x
    x = 1,135,396,978.76/39,000.78
  6. Step 6: Final answer
    x = 29,112.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.