Home / 15,664.78-21,618.46-8,856.46

Finding the Fourth Proportional to 15,664.78, 21,618.46 and 8,856.46

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Solution

The fourth proportional to 15,664.78, 21,618.46 and 8,856.46 is: 12,222.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.78 : 21,618.46 = 8,856.46 : x
  2. Step 2: Convert to fraction form
    15,664.78/21,618.46 = 8,856.46/x
  3. Step 3: Cross multiply
    15,664.78x = 21,618.46 × 8,856.46
  4. Step 4: Simplify right side
    15,664.78x = 191,463,026.25
  5. Step 5: Solve for x
    x = 191,463,026.25/15,664.78
  6. Step 6: Final answer
    x = 12,222.52

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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.