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Finding the Fourth Proportional to 38,610, 53,282.88 and 21,844.08

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Solution

The fourth proportional to 38,610, 53,282.88 and 21,844.08 is: 30,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,610 : 53,282.88 = 21,844.08 : x
  2. Step 2: Convert to fraction form
    38,610/53,282.88 = 21,844.08/x
  3. Step 3: Cross multiply
    38,610x = 53,282.88 × 21,844.08
  4. Step 4: Simplify right side
    38,610x = 1,163,915,493.35
  5. Step 5: Solve for x
    x = 1,163,915,493.35/38,610
  6. Step 6: Final answer
    x = 30,145.44

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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.