Home / 25,109.78-34,651.44-13,931.78

Finding the Fourth Proportional to 25,109.78, 34,651.44 and 13,931.78

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Solution

The fourth proportional to 25,109.78, 34,651.44 and 13,931.78 is: 19,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,109.78 : 34,651.44 = 13,931.78 : x
  2. Step 2: Convert to fraction form
    25,109.78/34,651.44 = 13,931.78/x
  3. Step 3: Cross multiply
    25,109.78x = 34,651.44 × 13,931.78
  4. Step 4: Simplify right side
    25,109.78x = 482,756,238.76
  5. Step 5: Solve for x
    x = 482,756,238.76/25,109.78
  6. Step 6: Final answer
    x = 19,225.83

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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.