Home / 12,455,663.70-18,683,495.55-7,647,762.90

Finding the Fourth Proportional to 12,455,663.70, 18,683,495.55 and 7,647,762.90

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Solution

The fourth proportional to 12,455,663.70, 18,683,495.55 and 7,647,762.90 is: 11,471,644.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,663.70 : 18,683,495.55 = 7,647,762.90 : x
  2. Step 2: Convert to fraction form
    12,455,663.70/18,683,495.55 = 7,647,762.90/x
  3. Step 3: Cross multiply
    12,455,663.70x = 18,683,495.55 × 7,647,762.90
  4. Step 4: Simplify right side
    12,455,663.70x = 142,886,944,109,605.09
  5. Step 5: Solve for x
    x = 142,886,944,109,605.09/12,455,663.70
  6. Step 6: Final answer
    x = 11,471,644.35

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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.