Home / 30,698,885.36-42,370,007.64-18,309,773.36

Finding the Fourth Proportional to 30,698,885.36, 42,370,007.64 and 18,309,773.36

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Solution

The fourth proportional to 30,698,885.36, 42,370,007.64 and 18,309,773.36 is: 25,270,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,698,885.36 : 42,370,007.64 = 18,309,773.36 : x
  2. Step 2: Convert to fraction form
    30,698,885.36/42,370,007.64 = 18,309,773.36/x
  3. Step 3: Cross multiply
    30,698,885.36x = 42,370,007.64 × 18,309,773.36
  4. Step 4: Simplify right side
    30,698,885.36x = 775,785,237,149,868.50
  5. Step 5: Solve for x
    x = 775,785,237,149,868.50/30,698,885.36
  6. Step 6: Final answer
    x = 25,270,794.95

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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.