Home / 12,999,827.80-17,939,542.26-7,198,485.40

Finding the Fourth Proportional to 12,999,827.80, 17,939,542.26 and 7,198,485.40

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Solution

The fourth proportional to 12,999,827.80, 17,939,542.26 and 7,198,485.40 is: 9,933,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,827.80 : 17,939,542.26 = 7,198,485.40 : x
  2. Step 2: Convert to fraction form
    12,999,827.80/17,939,542.26 = 7,198,485.40/x
  3. Step 3: Cross multiply
    12,999,827.80x = 17,939,542.26 × 7,198,485.40
  4. Step 4: Simplify right side
    12,999,827.80x = 129,137,533,041,293.02
  5. Step 5: Solve for x
    x = 129,137,533,041,293.02/12,999,827.80
  6. Step 6: Final answer
    x = 9,933,787.97

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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.