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Finding the Fourth Proportional to 16,999.58, 25,509.36 and 7,138.10

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Solution

The fourth proportional to 16,999.58, 25,509.36 and 7,138.10 is: 10,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,999.58 : 25,509.36 = 7,138.10 : x
  2. Step 2: Convert to fraction form
    16,999.58/25,509.36 = 7,138.10/x
  3. Step 3: Cross multiply
    16,999.58x = 25,509.36 × 7,138.10
  4. Step 4: Simplify right side
    16,999.58x = 182,088,235.07
  5. Step 5: Solve for x
    x = 182,088,235.07/16,999.58
  6. Step 6: Final answer
    x = 10,711.34

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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.