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Finding the Fourth Proportional to 20,574.84, 30,874.86 and 8,887.80

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Solution

The fourth proportional to 20,574.84, 30,874.86 and 8,887.80 is: 13,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.84 : 30,874.86 = 8,887.80 : x
  2. Step 2: Convert to fraction form
    20,574.84/30,874.86 = 8,887.80/x
  3. Step 3: Cross multiply
    20,574.84x = 30,874.86 × 8,887.80
  4. Step 4: Simplify right side
    20,574.84x = 274,409,580.71
  5. Step 5: Solve for x
    x = 274,409,580.71/20,574.84
  6. Step 6: Final answer
    x = 13,337.14

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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.