Home / 21,411.54-32,114.43-6,630.66

Finding the Fourth Proportional to 21,411.54, 32,114.43 and 6,630.66

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Solution

The fourth proportional to 21,411.54, 32,114.43 and 6,630.66 is: 9,945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.54 : 32,114.43 = 6,630.66 : x
  2. Step 2: Convert to fraction form
    21,411.54/32,114.43 = 6,630.66/x
  3. Step 3: Cross multiply
    21,411.54x = 32,114.43 × 6,630.66
  4. Step 4: Simplify right side
    21,411.54x = 212,939,866.42
  5. Step 5: Solve for x
    x = 212,939,866.42/21,411.54
  6. Step 6: Final answer
    x = 9,945.10

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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.