Home / 12,338,890.40-17,029,741.38-7,185,290.60

Finding the Fourth Proportional to 12,338,890.40, 17,029,741.38 and 7,185,290.60

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Solution

The fourth proportional to 12,338,890.40, 17,029,741.38 and 7,185,290.60 is: 9,916,907.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338,890.40 : 17,029,741.38 = 7,185,290.60 : x
  2. Step 2: Convert to fraction form
    12,338,890.40/17,029,741.38 = 7,185,290.60/x
  3. Step 3: Cross multiply
    12,338,890.40x = 17,029,741.38 × 7,185,290.60
  4. Step 4: Simplify right side
    12,338,890.40x = 122,363,640,658,145.02
  5. Step 5: Solve for x
    x = 122,363,640,658,145.02/12,338,890.40
  6. Step 6: Final answer
    x = 9,916,907.98

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1.5x scale

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.