Home / 13,340,139-18,409,455.66-7,228,578.36

Finding the Fourth Proportional to 13,340,139, 18,409,455.66 and 7,228,578.36

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Solution

The fourth proportional to 13,340,139, 18,409,455.66 and 7,228,578.36 is: 9,975,472.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340,139 : 18,409,455.66 = 7,228,578.36 : x
  2. Step 2: Convert to fraction form
    13,340,139/18,409,455.66 = 7,228,578.36/x
  3. Step 3: Cross multiply
    13,340,139x = 18,409,455.66 × 7,228,578.36
  4. Step 4: Simplify right side
    13,340,139x = 133,074,192,803,255.53
  5. Step 5: Solve for x
    x = 133,074,192,803,255.53/13,340,139
  6. Step 6: Final answer
    x = 9,975,472.73

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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.