Home / 28,731,287.15-39,650,019.05-15,679,388.87

Finding the Fourth Proportional to 28,731,287.15, 39,650,019.05 and 15,679,388.87

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Solution

The fourth proportional to 28,731,287.15, 39,650,019.05 and 15,679,388.87 is: 21,638,016.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,287.15 : 39,650,019.05 = 15,679,388.87 : x
  2. Step 2: Convert to fraction form
    28,731,287.15/39,650,019.05 = 15,679,388.87/x
  3. Step 3: Cross multiply
    28,731,287.15x = 39,650,019.05 × 15,679,388.87
  4. Step 4: Simplify right side
    28,731,287.15x = 621,688,067,309,461
  5. Step 5: Solve for x
    x = 621,688,067,309,461/28,731,287.15
  6. Step 6: Final answer
    x = 21,638,016.57

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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.