Home / 39,014.08-53,839.04-21,108.69

Finding the Fourth Proportional to 39,014.08, 53,839.04 and 21,108.69

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Solution

The fourth proportional to 39,014.08, 53,839.04 and 21,108.69 is: 29,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,014.08 : 53,839.04 = 21,108.69 : x
  2. Step 2: Convert to fraction form
    39,014.08/53,839.04 = 21,108.69/x
  3. Step 3: Cross multiply
    39,014.08x = 53,839.04 × 21,108.69
  4. Step 4: Simplify right side
    39,014.08x = 1,136,471,605.26
  5. Step 5: Solve for x
    x = 1,136,471,605.26/39,014.08
  6. Step 6: Final answer
    x = 29,129.78

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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.