Home / 15,558.57-21,470.82-8,485.04

Finding the Fourth Proportional to 15,558.57, 21,470.82 and 8,485.04

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Solution

The fourth proportional to 15,558.57, 21,470.82 and 8,485.04 is: 11,709.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.57 : 21,470.82 = 8,485.04 : x
  2. Step 2: Convert to fraction form
    15,558.57/21,470.82 = 8,485.04/x
  3. Step 3: Cross multiply
    15,558.57x = 21,470.82 × 8,485.04
  4. Step 4: Simplify right side
    15,558.57x = 182,180,659.18
  5. Step 5: Solve for x
    x = 182,180,659.18/15,558.57
  6. Step 6: Final answer
    x = 11,709.34

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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.