Home / 15,605.43-21,533.94-8,890.66

Finding the Fourth Proportional to 15,605.43, 21,533.94 and 8,890.66

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Solution

The fourth proportional to 15,605.43, 21,533.94 and 8,890.66 is: 12,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.43 : 21,533.94 = 8,890.66 : x
  2. Step 2: Convert to fraction form
    15,605.43/21,533.94 = 8,890.66/x
  3. Step 3: Cross multiply
    15,605.43x = 21,533.94 × 8,890.66
  4. Step 4: Simplify right side
    15,605.43x = 191,450,939.00
  5. Step 5: Solve for x
    x = 191,450,939.00/15,605.43
  6. Step 6: Final answer
    x = 12,268.23

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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.