Home / 21,234.75-31,848.54-6,440.10

Finding the Fourth Proportional to 21,234.75, 31,848.54 and 6,440.10

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Solution

The fourth proportional to 21,234.75, 31,848.54 and 6,440.10 is: 9,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.75 : 31,848.54 = 6,440.10 : x
  2. Step 2: Convert to fraction form
    21,234.75/31,848.54 = 6,440.10/x
  3. Step 3: Cross multiply
    21,234.75x = 31,848.54 × 6,440.10
  4. Step 4: Simplify right side
    21,234.75x = 205,107,782.45
  5. Step 5: Solve for x
    x = 205,107,782.45/21,234.75
  6. Step 6: Final answer
    x = 9,659.06

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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.