Home / 28,205,099.76-42,307,663.64-18,618,237.68

Finding the Fourth Proportional to 28,205,099.76, 42,307,663.64 and 18,618,237.68

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Solution

The fourth proportional to 28,205,099.76, 42,307,663.64 and 18,618,237.68 is: 27,927,365.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205,099.76 : 42,307,663.64 = 18,618,237.68 : x
  2. Step 2: Convert to fraction form
    28,205,099.76/42,307,663.64 = 18,618,237.68/x
  3. Step 3: Cross multiply
    28,205,099.76x = 42,307,663.64 × 18,618,237.68
  4. Step 4: Simplify right side
    28,205,099.76x = 787,694,137,335,014
  5. Step 5: Solve for x
    x = 787,694,137,335,014/28,205,099.76
  6. Step 6: Final answer
    x = 27,927,365.76

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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.