Home / 21,191.19-31,787.33-6,400.59

Finding the Fourth Proportional to 21,191.19, 31,787.33 and 6,400.59

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Solution

The fourth proportional to 21,191.19, 31,787.33 and 6,400.59 is: 9,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.19 : 31,787.33 = 6,400.59 : x
  2. Step 2: Convert to fraction form
    21,191.19/31,787.33 = 6,400.59/x
  3. Step 3: Cross multiply
    21,191.19x = 31,787.33 × 6,400.59
  4. Step 4: Simplify right side
    21,191.19x = 203,457,634.52
  5. Step 5: Solve for x
    x = 203,457,634.52/21,191.19
  6. Step 6: Final answer
    x = 9,601.05

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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.