Home / 13,869,688.40-20,804,532.60-8,494,917.20

Finding the Fourth Proportional to 13,869,688.40, 20,804,532.60 and 8,494,917.20

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Solution

The fourth proportional to 13,869,688.40, 20,804,532.60 and 8,494,917.20 is: 12,742,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869,688.40 : 20,804,532.60 = 8,494,917.20 : x
  2. Step 2: Convert to fraction form
    13,869,688.40/20,804,532.60 = 8,494,917.20/x
  3. Step 3: Cross multiply
    13,869,688.40x = 20,804,532.60 × 8,494,917.20
  4. Step 4: Simplify right side
    13,869,688.40x = 176,732,781,821,700.72
  5. Step 5: Solve for x
    x = 176,732,781,821,700.72/13,869,688.40
  6. Step 6: Final answer
    x = 12,742,375.80

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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.