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Finding the Fourth Proportional to 38,671.07, 53,366.05 and 21,904.07

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Solution

The fourth proportional to 38,671.07, 53,366.05 and 21,904.07 is: 30,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,671.07 : 53,366.05 = 21,904.07 : x
  2. Step 2: Convert to fraction form
    38,671.07/53,366.05 = 21,904.07/x
  3. Step 3: Cross multiply
    38,671.07x = 53,366.05 × 21,904.07
  4. Step 4: Simplify right side
    38,671.07x = 1,168,933,694.82
  5. Step 5: Solve for x
    x = 1,168,933,694.82/38,671.07
  6. Step 6: Final answer
    x = 30,227.60

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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.