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Finding the Fourth Proportional to 16,689.88, 25,041.75 and 7,325.05

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Solution

The fourth proportional to 16,689.88, 25,041.75 and 7,325.05 is: 10,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.88 : 25,041.75 = 7,325.05 : x
  2. Step 2: Convert to fraction form
    16,689.88/25,041.75 = 7,325.05/x
  3. Step 3: Cross multiply
    16,689.88x = 25,041.75 × 7,325.05
  4. Step 4: Simplify right side
    16,689.88x = 183,432,070.84
  5. Step 5: Solve for x
    x = 183,432,070.84/16,689.88
  6. Step 6: Final answer
    x = 10,990.62

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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.