Home / 30,902,328.70-42,647,369.07-20,430,150.52

Finding the Fourth Proportional to 30,902,328.70, 42,647,369.07 and 20,430,150.52

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Solution

The fourth proportional to 30,902,328.70, 42,647,369.07 and 20,430,150.52 is: 28,195,032.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902,328.70 : 42,647,369.07 = 20,430,150.52 : x
  2. Step 2: Convert to fraction form
    30,902,328.70/42,647,369.07 = 20,430,150.52/x
  3. Step 3: Cross multiply
    30,902,328.70x = 42,647,369.07 × 20,430,150.52
  4. Step 4: Simplify right side
    30,902,328.70x = 871,292,169,382,092.38
  5. Step 5: Solve for x
    x = 871,292,169,382,092.38/30,902,328.70
  6. Step 6: Final answer
    x = 28,195,032.74

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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.