Home / 20,391,809.67-30,578,740.38-10,804,978.53

Finding the Fourth Proportional to 20,391,809.67, 30,578,740.38 and 10,804,978.53

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Solution

The fourth proportional to 20,391,809.67, 30,578,740.38 and 10,804,978.53 is: 16,202,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,809.67 : 30,578,740.38 = 10,804,978.53 : x
  2. Step 2: Convert to fraction form
    20,391,809.67/30,578,740.38 = 10,804,978.53/x
  3. Step 3: Cross multiply
    20,391,809.67x = 30,578,740.38 × 10,804,978.53
  4. Step 4: Simplify right side
    20,391,809.67x = 330,402,633,280,344
  5. Step 5: Solve for x
    x = 330,402,633,280,344/20,391,809.67
  6. Step 6: Final answer
    x = 16,202,712.69

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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.