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Finding the Fourth Proportional to 21,628.62, 32,442.93 and 9,316.62

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Solution

The fourth proportional to 21,628.62, 32,442.93 and 9,316.62 is: 13,974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.62 : 32,442.93 = 9,316.62 : x
  2. Step 2: Convert to fraction form
    21,628.62/32,442.93 = 9,316.62/x
  3. Step 3: Cross multiply
    21,628.62x = 32,442.93 × 9,316.62
  4. Step 4: Simplify right side
    21,628.62x = 302,258,450.50
  5. Step 5: Solve for x
    x = 302,258,450.50/21,628.62
  6. Step 6: Final answer
    x = 13,974.93

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Similar ratio
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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.