Home / 28,773,993.32-39,707,647.38-15,720,972.20

Finding the Fourth Proportional to 28,773,993.32, 39,707,647.38 and 15,720,972.20

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Solution

The fourth proportional to 28,773,993.32, 39,707,647.38 and 15,720,972.20 is: 21,694,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773,993.32 : 39,707,647.38 = 15,720,972.20 : x
  2. Step 2: Convert to fraction form
    28,773,993.32/39,707,647.38 = 15,720,972.20/x
  3. Step 3: Cross multiply
    28,773,993.32x = 39,707,647.38 × 15,720,972.20
  4. Step 4: Simplify right side
    28,773,993.32x = 624,242,820,588,382.88
  5. Step 5: Solve for x
    x = 624,242,820,588,382.88/28,773,993.32
  6. Step 6: Final answer
    x = 21,694,688.45

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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.