Home / 21,191.49-31,787.37-6,400.35

Finding the Fourth Proportional to 21,191.49, 31,787.37 and 6,400.35

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Solution

The fourth proportional to 21,191.49, 31,787.37 and 6,400.35 is: 9,600.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.49 : 31,787.37 = 6,400.35 : x
  2. Step 2: Convert to fraction form
    21,191.49/31,787.37 = 6,400.35/x
  3. Step 3: Cross multiply
    21,191.49x = 31,787.37 × 6,400.35
  4. Step 4: Simplify right side
    21,191.49x = 203,450,293.58
  5. Step 5: Solve for x
    x = 203,450,293.58/21,191.49
  6. Step 6: Final answer
    x = 9,600.57

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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.