Home / 15,631.73-21,571.80-8,558.19

Finding the Fourth Proportional to 15,631.73, 21,571.80 and 8,558.19

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Solution

The fourth proportional to 15,631.73, 21,571.80 and 8,558.19 is: 11,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.73 : 21,571.80 = 8,558.19 : x
  2. Step 2: Convert to fraction form
    15,631.73/21,571.80 = 8,558.19/x
  3. Step 3: Cross multiply
    15,631.73x = 21,571.80 × 8,558.19
  4. Step 4: Simplify right side
    15,631.73x = 184,615,563.04
  5. Step 5: Solve for x
    x = 184,615,563.04/15,631.73
  6. Step 6: Final answer
    x = 11,810.31

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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.