Home / 21,832.02-30,127.32-12,399.54

Finding the Fourth Proportional to 21,832.02, 30,127.32 and 12,399.54

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Solution

The fourth proportional to 21,832.02, 30,127.32 and 12,399.54 is: 17,110.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.02 : 30,127.32 = 12,399.54 : x
  2. Step 2: Convert to fraction form
    21,832.02/30,127.32 = 12,399.54/x
  3. Step 3: Cross multiply
    21,832.02x = 30,127.32 × 12,399.54
  4. Step 4: Simplify right side
    21,832.02x = 373,564,909.43
  5. Step 5: Solve for x
    x = 373,564,909.43/21,832.02
  6. Step 6: Final answer
    x = 17,110.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.