Home / 20,400,971-30,605,494.80-5,828,016.20

Finding the Fourth Proportional to 20,400,971, 30,605,494.80 and 5,828,016.20

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Solution

The fourth proportional to 20,400,971, 30,605,494.80 and 5,828,016.20 is: 8,743,177.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400,971 : 30,605,494.80 = 5,828,016.20 : x
  2. Step 2: Convert to fraction form
    20,400,971/30,605,494.80 = 5,828,016.20/x
  3. Step 3: Cross multiply
    20,400,971x = 30,605,494.80 × 5,828,016.20
  4. Step 4: Simplify right side
    20,400,971x = 178,369,319,503,415.78
  5. Step 5: Solve for x
    x = 178,369,319,503,415.78/20,400,971
  6. Step 6: Final answer
    x = 8,743,177.94

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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.