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Finding the Fourth Proportional to 25,951.71, 38,933.01 and 8,420.16

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Solution

The fourth proportional to 25,951.71, 38,933.01 and 8,420.16 is: 12,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,951.71 : 38,933.01 = 8,420.16 : x
  2. Step 2: Convert to fraction form
    25,951.71/38,933.01 = 8,420.16/x
  3. Step 3: Cross multiply
    25,951.71x = 38,933.01 × 8,420.16
  4. Step 4: Simplify right side
    25,951.71x = 327,822,173.48
  5. Step 5: Solve for x
    x = 327,822,173.48/25,951.71
  6. Step 6: Final answer
    x = 12,632.01

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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.