Home / 20,670.71-30,981.44-14,396.74

Finding the Fourth Proportional to 20,670.71, 30,981.44 and 14,396.74

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Solution

The fourth proportional to 20,670.71, 30,981.44 and 14,396.74 is: 21,577.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.71 : 30,981.44 = 14,396.74 : x
  2. Step 2: Convert to fraction form
    20,670.71/30,981.44 = 14,396.74/x
  3. Step 3: Cross multiply
    20,670.71x = 30,981.44 × 14,396.74
  4. Step 4: Simplify right side
    20,670.71x = 446,031,695.04
  5. Step 5: Solve for x
    x = 446,031,695.04/20,670.71
  6. Step 6: Final answer
    x = 21,577.96

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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.