Home / 18,755,622.40-28,130,668.80-5,293,811.20

Finding the Fourth Proportional to 18,755,622.40, 28,130,668.80 and 5,293,811.20

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Solution

The fourth proportional to 18,755,622.40, 28,130,668.80 and 5,293,811.20 is: 7,939,936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755,622.40 : 28,130,668.80 = 5,293,811.20 : x
  2. Step 2: Convert to fraction form
    18,755,622.40/28,130,668.80 = 5,293,811.20/x
  3. Step 3: Cross multiply
    18,755,622.40x = 28,130,668.80 × 5,293,811.20
  4. Step 4: Simplify right side
    18,755,622.40x = 148,918,449,556,930.56
  5. Step 5: Solve for x
    x = 148,918,449,556,930.56/18,755,622.40
  6. Step 6: Final answer
    x = 7,939,936.43

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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.