Home / 39,858.08-55,004.52-21,953.72

Finding the Fourth Proportional to 39,858.08, 55,004.52 and 21,953.72

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Solution

The fourth proportional to 39,858.08, 55,004.52 and 21,953.72 is: 30,296.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,858.08 : 55,004.52 = 21,953.72 : x
  2. Step 2: Convert to fraction form
    39,858.08/55,004.52 = 21,953.72/x
  3. Step 3: Cross multiply
    39,858.08x = 55,004.52 × 21,953.72
  4. Step 4: Simplify right side
    39,858.08x = 1,207,553,830.81
  5. Step 5: Solve for x
    x = 1,207,553,830.81/39,858.08
  6. Step 6: Final answer
    x = 30,296.34

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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.