Home / 14,555.95-20,085.55-8,181.25

Finding the Fourth Proportional to 14,555.95, 20,085.55 and 8,181.25

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Solution

The fourth proportional to 14,555.95, 20,085.55 and 8,181.25 is: 11,289.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,555.95 : 20,085.55 = 8,181.25 : x
  2. Step 2: Convert to fraction form
    14,555.95/20,085.55 = 8,181.25/x
  3. Step 3: Cross multiply
    14,555.95x = 20,085.55 × 8,181.25
  4. Step 4: Simplify right side
    14,555.95x = 164,324,905.94
  5. Step 5: Solve for x
    x = 164,324,905.94/14,555.95
  6. Step 6: Final answer
    x = 11,289.19

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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.