Home / 21,085,213.60-31,606,825.20-9,705,815.20

Finding the Fourth Proportional to 21,085,213.60, 31,606,825.20 and 9,705,815.20

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Solution

The fourth proportional to 21,085,213.60, 31,606,825.20 and 9,705,815.20 is: 14,549,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085,213.60 : 31,606,825.20 = 9,705,815.20 : x
  2. Step 2: Convert to fraction form
    21,085,213.60/31,606,825.20 = 9,705,815.20/x
  3. Step 3: Cross multiply
    21,085,213.60x = 31,606,825.20 × 9,705,815.20
  4. Step 4: Simplify right side
    21,085,213.60x = 306,770,004,449,903
  5. Step 5: Solve for x
    x = 306,770,004,449,903/21,085,213.60
  6. Step 6: Final answer
    x = 14,549,058.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.