Home / 30,902,326.54-42,647,366.08-20,430,148.38

Finding the Fourth Proportional to 30,902,326.54, 42,647,366.08 and 20,430,148.38

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Solution

The fourth proportional to 30,902,326.54, 42,647,366.08 and 20,430,148.38 is: 28,195,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902,326.54 : 42,647,366.08 = 20,430,148.38 : x
  2. Step 2: Convert to fraction form
    30,902,326.54/42,647,366.08 = 20,430,148.38/x
  3. Step 3: Cross multiply
    30,902,326.54x = 42,647,366.08 × 20,430,148.38
  4. Step 4: Simplify right side
    30,902,326.54x = 871,292,017,030,578.88
  5. Step 5: Solve for x
    x = 871,292,017,030,578.88/30,902,326.54
  6. Step 6: Final answer
    x = 28,195,029.78

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1.5x scale

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.