Home / 12,999,779.80-17,939,477.34-7,198,436.92

Finding the Fourth Proportional to 12,999,779.80, 17,939,477.34 and 7,198,436.92

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Solution

The fourth proportional to 12,999,779.80, 17,939,477.34 and 7,198,436.92 is: 9,933,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,779.80 : 17,939,477.34 = 7,198,436.92 : x
  2. Step 2: Convert to fraction form
    12,999,779.80/17,939,477.34 = 7,198,436.92/x
  3. Step 3: Cross multiply
    12,999,779.80x = 17,939,477.34 × 7,198,436.92
  4. Step 4: Simplify right side
    12,999,779.80x = 129,136,196,009,759.39
  5. Step 5: Solve for x
    x = 129,136,196,009,759.39/12,999,779.80
  6. Step 6: Final answer
    x = 9,933,721.80

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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.