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Finding the Fourth Proportional to 25,974.40, 38,846.40 and 21,827.20

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Solution

The fourth proportional to 25,974.40, 38,846.40 and 21,827.20 is: 32,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,974.40 : 38,846.40 = 21,827.20 : x
  2. Step 2: Convert to fraction form
    25,974.40/38,846.40 = 21,827.20/x
  3. Step 3: Cross multiply
    25,974.40x = 38,846.40 × 21,827.20
  4. Step 4: Simplify right side
    25,974.40x = 847,908,142.08
  5. Step 5: Solve for x
    x = 847,908,142.08/25,974.40
  6. Step 6: Final answer
    x = 32,643.99

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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.