Home / 20,447.91-30,670.99-6,407.63

Finding the Fourth Proportional to 20,447.91, 30,670.99 and 6,407.63

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Solution

The fourth proportional to 20,447.91, 30,670.99 and 6,407.63 is: 9,611.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.91 : 30,670.99 = 6,407.63 : x
  2. Step 2: Convert to fraction form
    20,447.91/30,670.99 = 6,407.63/x
  3. Step 3: Cross multiply
    20,447.91x = 30,670.99 × 6,407.63
  4. Step 4: Simplify right side
    20,447.91x = 196,528,240.77
  5. Step 5: Solve for x
    x = 196,528,240.77/20,447.91
  6. Step 6: Final answer
    x = 9,611.17

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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.