Home / 15,631.86-21,571.97-8,558.28

Finding the Fourth Proportional to 15,631.86, 21,571.97 and 8,558.28

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Solution

The fourth proportional to 15,631.86, 21,571.97 and 8,558.28 is: 11,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.86 : 21,571.97 = 8,558.28 : x
  2. Step 2: Convert to fraction form
    15,631.86/21,571.97 = 8,558.28/x
  3. Step 3: Cross multiply
    15,631.86x = 21,571.97 × 8,558.28
  4. Step 4: Simplify right side
    15,631.86x = 184,618,973.11
  5. Step 5: Solve for x
    x = 184,618,973.11/15,631.86
  6. Step 6: Final answer
    x = 11,810.43

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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.