Home / 39,666.83-54,739.85-21,761.82

Finding the Fourth Proportional to 39,666.83, 54,739.85 and 21,761.82

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Solution

The fourth proportional to 39,666.83, 54,739.85 and 21,761.82 is: 30,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,666.83 : 54,739.85 = 21,761.82 : x
  2. Step 2: Convert to fraction form
    39,666.83/54,739.85 = 21,761.82/x
  3. Step 3: Cross multiply
    39,666.83x = 54,739.85 × 21,761.82
  4. Step 4: Simplify right side
    39,666.83x = 1,191,238,653.72
  5. Step 5: Solve for x
    x = 1,191,238,653.72/39,666.83
  6. Step 6: Final answer
    x = 30,031.11

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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.