Home / 12,455,530.40-18,683,295.60-10,439,991.20

Finding the Fourth Proportional to 12,455,530.40, 18,683,295.60 and 10,439,991.20

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Solution

The fourth proportional to 12,455,530.40, 18,683,295.60 and 10,439,991.20 is: 15,659,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,530.40 : 18,683,295.60 = 10,439,991.20 : x
  2. Step 2: Convert to fraction form
    12,455,530.40/18,683,295.60 = 10,439,991.20/x
  3. Step 3: Cross multiply
    12,455,530.40x = 18,683,295.60 × 10,439,991.20
  4. Step 4: Simplify right side
    12,455,530.40x = 195,053,441,650,998.72
  5. Step 5: Solve for x
    x = 195,053,441,650,998.72/12,455,530.40
  6. Step 6: Final answer
    x = 15,659,986.80

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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.