Home / 21,195.27-31,787.64-6,403.05

Finding the Fourth Proportional to 21,195.27, 31,787.64 and 6,403.05

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Solution

The fourth proportional to 21,195.27, 31,787.64 and 6,403.05 is: 9,602.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.27 : 31,787.64 = 6,403.05 : x
  2. Step 2: Convert to fraction form
    21,195.27/31,787.64 = 6,403.05/x
  3. Step 3: Cross multiply
    21,195.27x = 31,787.64 × 6,403.05
  4. Step 4: Simplify right side
    21,195.27x = 203,537,848.30
  5. Step 5: Solve for x
    x = 203,537,848.30/21,195.27
  6. Step 6: Final answer
    x = 9,602.98

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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.