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Finding the Fourth Proportional to 21,693.48, 29,937.06 and 11,757.48

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Solution

The fourth proportional to 21,693.48, 29,937.06 and 11,757.48 is: 16,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.48 : 29,937.06 = 11,757.48 : x
  2. Step 2: Convert to fraction form
    21,693.48/29,937.06 = 11,757.48/x
  3. Step 3: Cross multiply
    21,693.48x = 29,937.06 × 11,757.48
  4. Step 4: Simplify right side
    21,693.48x = 351,984,384.21
  5. Step 5: Solve for x
    x = 351,984,384.21/21,693.48
  6. Step 6: Final answer
    x = 16,225.35

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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.