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Finding the Fourth Proportional to 21,783.08, 32,680.08 and 6,993.48

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Solution

The fourth proportional to 21,783.08, 32,680.08 and 6,993.48 is: 10,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.08 : 32,680.08 = 6,993.48 : x
  2. Step 2: Convert to fraction form
    21,783.08/32,680.08 = 6,993.48/x
  3. Step 3: Cross multiply
    21,783.08x = 32,680.08 × 6,993.48
  4. Step 4: Simplify right side
    21,783.08x = 228,547,485.88
  5. Step 5: Solve for x
    x = 228,547,485.88/21,783.08
  6. Step 6: Final answer
    x = 10,491.97

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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.