Home / 21,188.88-31,783.55-6,397.93

Finding the Fourth Proportional to 21,188.88, 31,783.55 and 6,397.93

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Solution

The fourth proportional to 21,188.88, 31,783.55 and 6,397.93 is: 9,596.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.88 : 31,783.55 = 6,397.93 : x
  2. Step 2: Convert to fraction form
    21,188.88/31,783.55 = 6,397.93/x
  3. Step 3: Cross multiply
    21,188.88x = 31,783.55 × 6,397.93
  4. Step 4: Simplify right side
    21,188.88x = 203,348,928.05
  5. Step 5: Solve for x
    x = 203,348,928.05/21,188.88
  6. Step 6: Final answer
    x = 9,596.96

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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.