Home / 15,321.95-21,140.57-8,944.89

Finding the Fourth Proportional to 15,321.95, 21,140.57 and 8,944.89

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Solution

The fourth proportional to 15,321.95, 21,140.57 and 8,944.89 is: 12,341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.95 : 21,140.57 = 8,944.89 : x
  2. Step 2: Convert to fraction form
    15,321.95/21,140.57 = 8,944.89/x
  3. Step 3: Cross multiply
    15,321.95x = 21,140.57 × 8,944.89
  4. Step 4: Simplify right side
    15,321.95x = 189,100,028.46
  5. Step 5: Solve for x
    x = 189,100,028.46/15,321.95
  6. Step 6: Final answer
    x = 12,341.78

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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.