Home / 18,729,677.40-28,099,764.90-9,145,368.60

Finding the Fourth Proportional to 18,729,677.40, 28,099,764.90 and 9,145,368.60

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Solution

The fourth proportional to 18,729,677.40, 28,099,764.90 and 9,145,368.60 is: 13,720,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729,677.40 : 28,099,764.90 = 9,145,368.60 : x
  2. Step 2: Convert to fraction form
    18,729,677.40/28,099,764.90 = 9,145,368.60/x
  3. Step 3: Cross multiply
    18,729,677.40x = 28,099,764.90 × 9,145,368.60
  4. Step 4: Simplify right side
    18,729,677.40x = 256,982,707,583,842.12
  5. Step 5: Solve for x
    x = 256,982,707,583,842.12/18,729,677.40
  6. Step 6: Final answer
    x = 13,720,615.80

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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.