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Finding the Fourth Proportional to 21,440.88, 32,162.88 and 5,858.16

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Solution

The fourth proportional to 21,440.88, 32,162.88 and 5,858.16 is: 8,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.88 : 32,162.88 = 5,858.16 : x
  2. Step 2: Convert to fraction form
    21,440.88/32,162.88 = 5,858.16/x
  3. Step 3: Cross multiply
    21,440.88x = 32,162.88 × 5,858.16
  4. Step 4: Simplify right side
    21,440.88x = 188,415,297.10
  5. Step 5: Solve for x
    x = 188,415,297.10/21,440.88
  6. Step 6: Final answer
    x = 8,787.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.