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Finding the Fourth Proportional to 21,602.25, 29,821.10 and 15,234.03

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Solution

The fourth proportional to 21,602.25, 29,821.10 and 15,234.03 is: 21,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.25 : 29,821.10 = 15,234.03 : x
  2. Step 2: Convert to fraction form
    21,602.25/29,821.10 = 15,234.03/x
  3. Step 3: Cross multiply
    21,602.25x = 29,821.10 × 15,234.03
  4. Step 4: Simplify right side
    21,602.25x = 454,295,455.86
  5. Step 5: Solve for x
    x = 454,295,455.86/21,602.25
  6. Step 6: Final answer
    x = 21,030.01

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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.