Home / 21,234.12-31,697.91-19,695.72

Finding the Fourth Proportional to 21,234.12, 31,697.91 and 19,695.72

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Solution

The fourth proportional to 21,234.12, 31,697.91 and 19,695.72 is: 29,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.12 : 31,697.91 = 19,695.72 : x
  2. Step 2: Convert to fraction form
    21,234.12/31,697.91 = 19,695.72/x
  3. Step 3: Cross multiply
    21,234.12x = 31,697.91 × 19,695.72
  4. Step 4: Simplify right side
    21,234.12x = 624,313,159.95
  5. Step 5: Solve for x
    x = 624,313,159.95/21,234.12
  6. Step 6: Final answer
    x = 29,401.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.