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Finding the Fourth Proportional to 16,689.17, 25,036.52 and 7,919.30

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Solution

The fourth proportional to 16,689.17, 25,036.52 and 7,919.30 is: 11,880.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.17 : 25,036.52 = 7,919.30 : x
  2. Step 2: Convert to fraction form
    16,689.17/25,036.52 = 7,919.30/x
  3. Step 3: Cross multiply
    16,689.17x = 25,036.52 × 7,919.30
  4. Step 4: Simplify right side
    16,689.17x = 198,271,712.84
  5. Step 5: Solve for x
    x = 198,271,712.84/16,689.17
  6. Step 6: Final answer
    x = 11,880.26

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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.