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Finding the Fourth Proportional to 38,384.90, 52,975.07 and 21,391.91

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Solution

The fourth proportional to 38,384.90, 52,975.07 and 21,391.91 is: 29,523.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,384.90 : 52,975.07 = 21,391.91 : x
  2. Step 2: Convert to fraction form
    38,384.90/52,975.07 = 21,391.91/x
  3. Step 3: Cross multiply
    38,384.90x = 52,975.07 × 21,391.91
  4. Step 4: Simplify right side
    38,384.90x = 1,133,237,822.72
  5. Step 5: Solve for x
    x = 1,133,237,822.72/38,384.90
  6. Step 6: Final answer
    x = 29,523.01

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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.