Home / 25,690.88-35,429.64-19,722.80

Finding the Fourth Proportional to 25,690.88, 35,429.64 and 19,722.80

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Solution

The fourth proportional to 25,690.88, 35,429.64 and 19,722.80 is: 27,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,690.88 : 35,429.64 = 19,722.80 : x
  2. Step 2: Convert to fraction form
    25,690.88/35,429.64 = 19,722.80/x
  3. Step 3: Cross multiply
    25,690.88x = 35,429.64 × 19,722.80
  4. Step 4: Simplify right side
    25,690.88x = 698,771,703.79
  5. Step 5: Solve for x
    x = 698,771,703.79/25,690.88
  6. Step 6: Final answer
    x = 27,199.21

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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.