Home / 20,989.43-31,484.11-14,395.63

Finding the Fourth Proportional to 20,989.43, 31,484.11 and 14,395.63

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Solution

The fourth proportional to 20,989.43, 31,484.11 and 14,395.63 is: 21,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.43 : 31,484.11 = 14,395.63 : x
  2. Step 2: Convert to fraction form
    20,989.43/31,484.11 = 14,395.63/x
  3. Step 3: Cross multiply
    20,989.43x = 31,484.11 × 14,395.63
  4. Step 4: Simplify right side
    20,989.43x = 453,233,369.04
  5. Step 5: Solve for x
    x = 453,233,369.04/20,989.43
  6. Step 6: Final answer
    x = 21,593.41

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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.