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Finding the Fourth Proportional to 21,998.91, 32,998.37 and 5,358.81

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Solution

The fourth proportional to 21,998.91, 32,998.37 and 5,358.81 is: 8,038.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.91 : 32,998.37 = 5,358.81 : x
  2. Step 2: Convert to fraction form
    21,998.91/32,998.37 = 5,358.81/x
  3. Step 3: Cross multiply
    21,998.91x = 32,998.37 × 5,358.81
  4. Step 4: Simplify right side
    21,998.91x = 176,831,995.14
  5. Step 5: Solve for x
    x = 176,831,995.14/21,998.91
  6. Step 6: Final answer
    x = 8,038.22

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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.