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Finding the Fourth Proportional to 17,124.10, 25,685.79 and 7,890.10

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Solution

The fourth proportional to 17,124.10, 25,685.79 and 7,890.10 is: 11,834.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,124.10 : 25,685.79 = 7,890.10 : x
  2. Step 2: Convert to fraction form
    17,124.10/25,685.79 = 7,890.10/x
  3. Step 3: Cross multiply
    17,124.10x = 25,685.79 × 7,890.10
  4. Step 4: Simplify right side
    17,124.10x = 202,663,451.68
  5. Step 5: Solve for x
    x = 202,663,451.68/17,124.10
  6. Step 6: Final answer
    x = 11,834.98

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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.