Home / 12,879,178.40-19,318,767.60-9,666,912.80

Finding the Fourth Proportional to 12,879,178.40, 19,318,767.60 and 9,666,912.80

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Solution

The fourth proportional to 12,879,178.40, 19,318,767.60 and 9,666,912.80 is: 14,500,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,178.40 : 19,318,767.60 = 9,666,912.80 : x
  2. Step 2: Convert to fraction form
    12,879,178.40/19,318,767.60 = 9,666,912.80/x
  3. Step 3: Cross multiply
    12,879,178.40x = 19,318,767.60 × 9,666,912.80
  4. Step 4: Simplify right side
    12,879,178.40x = 186,752,841,792,665.31
  5. Step 5: Solve for x
    x = 186,752,841,792,665.31/12,879,178.40
  6. Step 6: Final answer
    x = 14,500,369.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.