Home / 15,480.22-21,364.95-8,768.56

Finding the Fourth Proportional to 15,480.22, 21,364.95 and 8,768.56

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Solution

The fourth proportional to 15,480.22, 21,364.95 and 8,768.56 is: 12,101.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.22 : 21,364.95 = 8,768.56 : x
  2. Step 2: Convert to fraction form
    15,480.22/21,364.95 = 8,768.56/x
  3. Step 3: Cross multiply
    15,480.22x = 21,364.95 × 8,768.56
  4. Step 4: Simplify right side
    15,480.22x = 187,339,845.97
  5. Step 5: Solve for x
    x = 187,339,845.97/15,480.22
  6. Step 6: Final answer
    x = 12,101.89

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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.