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Finding the Fourth Proportional to 21,047.76, 29,048.04 and 18,073.44

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Solution

The fourth proportional to 21,047.76, 29,048.04 and 18,073.44 is: 24,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.76 : 29,048.04 = 18,073.44 : x
  2. Step 2: Convert to fraction form
    21,047.76/29,048.04 = 18,073.44/x
  3. Step 3: Cross multiply
    21,047.76x = 29,048.04 × 18,073.44
  4. Step 4: Simplify right side
    21,047.76x = 524,998,008.06
  5. Step 5: Solve for x
    x = 524,998,008.06/21,047.76
  6. Step 6: Final answer
    x = 24,943.18

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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.