Home / 21,438.02-32,161.65-6,646.64

Finding the Fourth Proportional to 21,438.02, 32,161.65 and 6,646.64

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Solution

The fourth proportional to 21,438.02, 32,161.65 and 6,646.64 is: 9,971.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.02 : 32,161.65 = 6,646.64 : x
  2. Step 2: Convert to fraction form
    21,438.02/32,161.65 = 6,646.64/x
  3. Step 3: Cross multiply
    21,438.02x = 32,161.65 × 6,646.64
  4. Step 4: Simplify right side
    21,438.02x = 213,766,909.36
  5. Step 5: Solve for x
    x = 213,766,909.36/21,438.02
  6. Step 6: Final answer
    x = 9,971.39

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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.