Home / 13,920,955.50-19,210,682.88-7,809,252.78

Finding the Fourth Proportional to 13,920,955.50, 19,210,682.88 and 7,809,252.78

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Solution

The fourth proportional to 13,920,955.50, 19,210,682.88 and 7,809,252.78 is: 10,776,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920,955.50 : 19,210,682.88 = 7,809,252.78 : x
  2. Step 2: Convert to fraction form
    13,920,955.50/19,210,682.88 = 7,809,252.78/x
  3. Step 3: Cross multiply
    13,920,955.50x = 19,210,682.88 × 7,809,252.78
  4. Step 4: Simplify right side
    13,920,955.50x = 150,021,078,686,338.41
  5. Step 5: Solve for x
    x = 150,021,078,686,338.41/13,920,955.50
  6. Step 6: Final answer
    x = 10,776,636.61

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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.