Home / 15,699.45-21,665.24-8,626.32

Finding the Fourth Proportional to 15,699.45, 21,665.24 and 8,626.32

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Solution

The fourth proportional to 15,699.45, 21,665.24 and 8,626.32 is: 11,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.45 : 21,665.24 = 8,626.32 : x
  2. Step 2: Convert to fraction form
    15,699.45/21,665.24 = 8,626.32/x
  3. Step 3: Cross multiply
    15,699.45x = 21,665.24 × 8,626.32
  4. Step 4: Simplify right side
    15,699.45x = 186,891,293.12
  5. Step 5: Solve for x
    x = 186,891,293.12/15,699.45
  6. Step 6: Final answer
    x = 11,904.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.