Home / 13,005,445.72-17,947,508.82-7,778,453.77

Finding the Fourth Proportional to 13,005,445.72, 17,947,508.82 and 7,778,453.77

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Solution

The fourth proportional to 13,005,445.72, 17,947,508.82 and 7,778,453.77 is: 10,734,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005,445.72 : 17,947,508.82 = 7,778,453.77 : x
  2. Step 2: Convert to fraction form
    13,005,445.72/17,947,508.82 = 7,778,453.77/x
  3. Step 3: Cross multiply
    13,005,445.72x = 17,947,508.82 × 7,778,453.77
  4. Step 4: Simplify right side
    13,005,445.72x = 139,603,867,643,037.25
  5. Step 5: Solve for x
    x = 139,603,867,643,037.25/13,005,445.72
  6. Step 6: Final answer
    x = 10,734,262.45

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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.