Home / 25,911.60-38,867.40-19,690.80

Finding the Fourth Proportional to 25,911.60, 38,867.40 and 19,690.80

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Solution

The fourth proportional to 25,911.60, 38,867.40 and 19,690.80 is: 29,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,911.60 : 38,867.40 = 19,690.80 : x
  2. Step 2: Convert to fraction form
    25,911.60/38,867.40 = 19,690.80/x
  3. Step 3: Cross multiply
    25,911.60x = 38,867.40 × 19,690.80
  4. Step 4: Simplify right side
    25,911.60x = 765,330,199.92
  5. Step 5: Solve for x
    x = 765,330,199.92/25,911.60
  6. Step 6: Final answer
    x = 29,536.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.