Home / 12,770,421.60-19,130,749.20-7,706,690.40

Finding the Fourth Proportional to 12,770,421.60, 19,130,749.20 and 7,706,690.40

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Solution

The fourth proportional to 12,770,421.60, 19,130,749.20 and 7,706,690.40 is: 11,545,019.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770,421.60 : 19,130,749.20 = 7,706,690.40 : x
  2. Step 2: Convert to fraction form
    12,770,421.60/19,130,749.20 = 7,706,690.40/x
  3. Step 3: Cross multiply
    12,770,421.60x = 19,130,749.20 × 7,706,690.40
  4. Step 4: Simplify right side
    12,770,421.60x = 147,434,761,204,447.69
  5. Step 5: Solve for x
    x = 147,434,761,204,447.69/12,770,421.60
  6. Step 6: Final answer
    x = 11,545,019.09

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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.