Home / 15,699.86-21,665.39-8,626.29

Finding the Fourth Proportional to 15,699.86, 21,665.39 and 8,626.29

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Solution

The fourth proportional to 15,699.86, 21,665.39 and 8,626.29 is: 11,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.86 : 21,665.39 = 8,626.29 : x
  2. Step 2: Convert to fraction form
    15,699.86/21,665.39 = 8,626.29/x
  3. Step 3: Cross multiply
    15,699.86x = 21,665.39 × 8,626.29
  4. Step 4: Simplify right side
    15,699.86x = 186,891,893.97
  5. Step 5: Solve for x
    x = 186,891,893.97/15,699.86
  6. Step 6: Final answer
    x = 11,904.05

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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.