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Finding the Fourth Proportional to 25,967.93, 38,774.87 and 20,642.99

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Solution

The fourth proportional to 25,967.93, 38,774.87 and 20,642.99 is: 30,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.93 : 38,774.87 = 20,642.99 : x
  2. Step 2: Convert to fraction form
    25,967.93/38,774.87 = 20,642.99/x
  3. Step 3: Cross multiply
    25,967.93x = 38,774.87 × 20,642.99
  4. Step 4: Simplify right side
    25,967.93x = 800,429,033.98
  5. Step 5: Solve for x
    x = 800,429,033.98/25,967.93
  6. Step 6: Final answer
    x = 30,823.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.