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Finding the Fourth Proportional to 16,885.71, 25,328.57 and 4,405.71

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Solution

The fourth proportional to 16,885.71, 25,328.57 and 4,405.71 is: 6,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,885.71 : 25,328.57 = 4,405.71 : x
  2. Step 2: Convert to fraction form
    16,885.71/25,328.57 = 4,405.71/x
  3. Step 3: Cross multiply
    16,885.71x = 25,328.57 × 4,405.71
  4. Step 4: Simplify right side
    16,885.71x = 111,590,334.13
  5. Step 5: Solve for x
    x = 111,590,334.13/16,885.71
  6. Step 6: Final answer
    x = 6,608.57

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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.