Home / 12,455,677.60-18,683,516.40-7,647,776.80

Finding the Fourth Proportional to 12,455,677.60, 18,683,516.40 and 7,647,776.80

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Solution

The fourth proportional to 12,455,677.60, 18,683,516.40 and 7,647,776.80 is: 11,471,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,677.60 : 18,683,516.40 = 7,647,776.80 : x
  2. Step 2: Convert to fraction form
    12,455,677.60/18,683,516.40 = 7,647,776.80/x
  3. Step 3: Cross multiply
    12,455,677.60x = 18,683,516.40 × 7,647,776.80
  4. Step 4: Simplify right side
    12,455,677.60x = 142,887,363,266,339.50
  5. Step 5: Solve for x
    x = 142,887,363,266,339.50/12,455,677.60
  6. Step 6: Final answer
    x = 11,471,665.20

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Similar ratio
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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.