Home / 12,999,660.30-17,939,310.57-7,198,317.45

Finding the Fourth Proportional to 12,999,660.30, 17,939,310.57 and 7,198,317.45

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Solution

The fourth proportional to 12,999,660.30, 17,939,310.57 and 7,198,317.45 is: 9,933,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,660.30 : 17,939,310.57 = 7,198,317.45 : x
  2. Step 2: Convert to fraction form
    12,999,660.30/17,939,310.57 = 7,198,317.45/x
  3. Step 3: Cross multiply
    12,999,660.30x = 17,939,310.57 × 7,198,317.45
  4. Step 4: Simplify right side
    12,999,660.30x = 129,132,852,317,000.45
  5. Step 5: Solve for x
    x = 129,132,852,317,000.45/12,999,660.30
  6. Step 6: Final answer
    x = 9,933,555.90

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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.