Home / 25,453.67-38,129.76-19,880.93

Finding the Fourth Proportional to 25,453.67, 38,129.76 and 19,880.93

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Solution

The fourth proportional to 25,453.67, 38,129.76 and 19,880.93 is: 29,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,453.67 : 38,129.76 = 19,880.93 : x
  2. Step 2: Convert to fraction form
    25,453.67/38,129.76 = 19,880.93/x
  3. Step 3: Cross multiply
    25,453.67x = 38,129.76 × 19,880.93
  4. Step 4: Simplify right side
    25,453.67x = 758,054,898.83
  5. Step 5: Solve for x
    x = 758,054,898.83/25,453.67
  6. Step 6: Final answer
    x = 29,781.75

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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.