Home / 15,673.36-21,628.84-8,774.43

Finding the Fourth Proportional to 15,673.36, 21,628.84 and 8,774.43

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Solution

The fourth proportional to 15,673.36, 21,628.84 and 8,774.43 is: 12,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.36 : 21,628.84 = 8,774.43 : x
  2. Step 2: Convert to fraction form
    15,673.36/21,628.84 = 8,774.43/x
  3. Step 3: Cross multiply
    15,673.36x = 21,628.84 × 8,774.43
  4. Step 4: Simplify right side
    15,673.36x = 189,780,590.54
  5. Step 5: Solve for x
    x = 189,780,590.54/15,673.36
  6. Step 6: Final answer
    x = 12,108.49

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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.