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Finding the Fourth Proportional to 38,296.40, 52,848.52 and 21,529.40

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Solution

The fourth proportional to 38,296.40, 52,848.52 and 21,529.40 is: 29,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,296.40 : 52,848.52 = 21,529.40 : x
  2. Step 2: Convert to fraction form
    38,296.40/52,848.52 = 21,529.40/x
  3. Step 3: Cross multiply
    38,296.40x = 52,848.52 × 21,529.40
  4. Step 4: Simplify right side
    38,296.40x = 1,137,796,608.42
  5. Step 5: Solve for x
    x = 1,137,796,608.42/38,296.40
  6. Step 6: Final answer
    x = 29,710.28

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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.