Home / 39,005.62-53,827.48-21,100.36

Finding the Fourth Proportional to 39,005.62, 53,827.48 and 21,100.36

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Solution

The fourth proportional to 39,005.62, 53,827.48 and 21,100.36 is: 29,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,005.62 : 53,827.48 = 21,100.36 : x
  2. Step 2: Convert to fraction form
    39,005.62/53,827.48 = 21,100.36/x
  3. Step 3: Cross multiply
    39,005.62x = 53,827.48 × 21,100.36
  4. Step 4: Simplify right side
    39,005.62x = 1,135,779,205.89
  5. Step 5: Solve for x
    x = 1,135,779,205.89/39,005.62
  6. Step 6: Final answer
    x = 29,118.35

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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.