Home / 21,085,221.60-31,606,837.20-9,705,823.20

Finding the Fourth Proportional to 21,085,221.60, 31,606,837.20 and 9,705,823.20

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Solution

The fourth proportional to 21,085,221.60, 31,606,837.20 and 9,705,823.20 is: 14,549,070.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085,221.60 : 31,606,837.20 = 9,705,823.20 : x
  2. Step 2: Convert to fraction form
    21,085,221.60/31,606,837.20 = 9,705,823.20/x
  3. Step 3: Cross multiply
    21,085,221.60x = 31,606,837.20 × 9,705,823.20
  4. Step 4: Simplify right side
    21,085,221.60x = 306,770,373,774,383
  5. Step 5: Solve for x
    x = 306,770,373,774,383/21,085,221.60
  6. Step 6: Final answer
    x = 14,549,070.42

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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.