Home / 39,013.08-53,837.66-21,107.69

Finding the Fourth Proportional to 39,013.08, 53,837.66 and 21,107.69

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Solution

The fourth proportional to 39,013.08, 53,837.66 and 21,107.69 is: 29,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,013.08 : 53,837.66 = 21,107.69 : x
  2. Step 2: Convert to fraction form
    39,013.08/53,837.66 = 21,107.69/x
  3. Step 3: Cross multiply
    39,013.08x = 53,837.66 × 21,107.69
  4. Step 4: Simplify right side
    39,013.08x = 1,136,388,623.08
  5. Step 5: Solve for x
    x = 1,136,388,623.08/39,013.08
  6. Step 6: Final answer
    x = 29,128.40

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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.