Home / 12,534,809.60-18,808,435.20-7,147,596.80

Finding the Fourth Proportional to 12,534,809.60, 18,808,435.20 and 7,147,596.80

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Solution

The fourth proportional to 12,534,809.60, 18,808,435.20 and 7,147,596.80 is: 10,724,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,534,809.60 : 18,808,435.20 = 7,147,596.80 : x
  2. Step 2: Convert to fraction form
    12,534,809.60/18,808,435.20 = 7,147,596.80/x
  3. Step 3: Cross multiply
    12,534,809.60x = 18,808,435.20 × 7,147,596.80
  4. Step 4: Simplify right side
    12,534,809.60x = 134,435,111,248,527.34
  5. Step 5: Solve for x
    x = 134,435,111,248,527.34/12,534,809.60
  6. Step 6: Final answer
    x = 10,724,942.42

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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.