Home / 21,943.72-30,270.02-13,449.96

Finding the Fourth Proportional to 21,943.72, 30,270.02 and 13,449.96

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Solution

The fourth proportional to 21,943.72, 30,270.02 and 13,449.96 is: 18,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.72 : 30,270.02 = 13,449.96 : x
  2. Step 2: Convert to fraction form
    21,943.72/30,270.02 = 13,449.96/x
  3. Step 3: Cross multiply
    21,943.72x = 30,270.02 × 13,449.96
  4. Step 4: Simplify right side
    21,943.72x = 407,130,558.20
  5. Step 5: Solve for x
    x = 407,130,558.20/21,943.72
  6. Step 6: Final answer
    x = 18,553.40

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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.