Home / 15,699.34-21,665.10-8,626.29

Finding the Fourth Proportional to 15,699.34, 21,665.10 and 8,626.29

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Solution

The fourth proportional to 15,699.34, 21,665.10 and 8,626.29 is: 11,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.34 : 21,665.10 = 8,626.29 : x
  2. Step 2: Convert to fraction form
    15,699.34/21,665.10 = 8,626.29/x
  3. Step 3: Cross multiply
    15,699.34x = 21,665.10 × 8,626.29
  4. Step 4: Simplify right side
    15,699.34x = 186,889,435.48
  5. Step 5: Solve for x
    x = 186,889,435.48/15,699.34
  6. Step 6: Final answer
    x = 11,904.29

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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.