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Finding the Fourth Proportional to 21,848.60, 32,751.30 and 8,683.40

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Solution

The fourth proportional to 21,848.60, 32,751.30 and 8,683.40 is: 13,016.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.60 : 32,751.30 = 8,683.40 : x
  2. Step 2: Convert to fraction form
    21,848.60/32,751.30 = 8,683.40/x
  3. Step 3: Cross multiply
    21,848.60x = 32,751.30 × 8,683.40
  4. Step 4: Simplify right side
    21,848.60x = 284,392,638.42
  5. Step 5: Solve for x
    x = 284,392,638.42/21,848.60
  6. Step 6: Final answer
    x = 13,016.52

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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.