Home / 13,750.74-18,976.41-8,085.87

Finding the Fourth Proportional to 13,750.74, 18,976.41 and 8,085.87

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Solution

The fourth proportional to 13,750.74, 18,976.41 and 8,085.87 is: 11,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.74 : 18,976.41 = 8,085.87 : x
  2. Step 2: Convert to fraction form
    13,750.74/18,976.41 = 8,085.87/x
  3. Step 3: Cross multiply
    13,750.74x = 18,976.41 × 8,085.87
  4. Step 4: Simplify right side
    13,750.74x = 153,440,784.33
  5. Step 5: Solve for x
    x = 153,440,784.33/13,750.74
  6. Step 6: Final answer
    x = 11,158.73

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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.