Home / 13,120,808.60-19,681,212.90-7,381,245.80

Finding the Fourth Proportional to 13,120,808.60, 19,681,212.90 and 7,381,245.80

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Solution

The fourth proportional to 13,120,808.60, 19,681,212.90 and 7,381,245.80 is: 11,071,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,808.60 : 19,681,212.90 = 7,381,245.80 : x
  2. Step 2: Convert to fraction form
    13,120,808.60/19,681,212.90 = 7,381,245.80/x
  3. Step 3: Cross multiply
    13,120,808.60x = 19,681,212.90 × 7,381,245.80
  4. Step 4: Simplify right side
    13,120,808.60x = 145,271,870,057,030.81
  5. Step 5: Solve for x
    x = 145,271,870,057,030.81/13,120,808.60
  6. Step 6: Final answer
    x = 11,071,868.70

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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.