Home / 15,669.78-21,624.72-8,956.50

Finding the Fourth Proportional to 15,669.78, 21,624.72 and 8,956.50

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Solution

The fourth proportional to 15,669.78, 21,624.72 and 8,956.50 is: 12,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.78 : 21,624.72 = 8,956.50 : x
  2. Step 2: Convert to fraction form
    15,669.78/21,624.72 = 8,956.50/x
  3. Step 3: Cross multiply
    15,669.78x = 21,624.72 × 8,956.50
  4. Step 4: Simplify right side
    15,669.78x = 193,681,804.68
  5. Step 5: Solve for x
    x = 193,681,804.68/15,669.78
  6. Step 6: Final answer
    x = 12,360.21

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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.