Home / 20,059,356.80-30,089,035.20-12,878,998.40

Finding the Fourth Proportional to 20,059,356.80, 30,089,035.20 and 12,878,998.40

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Solution

The fourth proportional to 20,059,356.80, 30,089,035.20 and 12,878,998.40 is: 19,318,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,059,356.80 : 30,089,035.20 = 12,878,998.40 : x
  2. Step 2: Convert to fraction form
    20,059,356.80/30,089,035.20 = 12,878,998.40/x
  3. Step 3: Cross multiply
    20,059,356.80x = 30,089,035.20 × 12,878,998.40
  4. Step 4: Simplify right side
    20,059,356.80x = 387,516,636,198,343.69
  5. Step 5: Solve for x
    x = 387,516,636,198,343.69/20,059,356.80
  6. Step 6: Final answer
    x = 19,318,497.60

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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.