Home / 20,989.63-31,484.41-14,395.83

Finding the Fourth Proportional to 20,989.63, 31,484.41 and 14,395.83

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Solution

The fourth proportional to 20,989.63, 31,484.41 and 14,395.83 is: 21,593.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.63 : 31,484.41 = 14,395.83 : x
  2. Step 2: Convert to fraction form
    20,989.63/31,484.41 = 14,395.83/x
  3. Step 3: Cross multiply
    20,989.63x = 31,484.41 × 14,395.83
  4. Step 4: Simplify right side
    20,989.63x = 453,244,214.01
  5. Step 5: Solve for x
    x = 453,244,214.01/20,989.63
  6. Step 6: Final answer
    x = 21,593.72

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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.