Home / 25,207.48-34,786.30-15,643.80

Finding the Fourth Proportional to 25,207.48, 34,786.30 and 15,643.80

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Solution

The fourth proportional to 25,207.48, 34,786.30 and 15,643.80 is: 21,588.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,207.48 : 34,786.30 = 15,643.80 : x
  2. Step 2: Convert to fraction form
    25,207.48/34,786.30 = 15,643.80/x
  3. Step 3: Cross multiply
    25,207.48x = 34,786.30 × 15,643.80
  4. Step 4: Simplify right side
    25,207.48x = 544,189,919.94
  5. Step 5: Solve for x
    x = 544,189,919.94/25,207.48
  6. Step 6: Final answer
    x = 21,588.43

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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.