Home / 20,395,020.72-28,144,266.53-11,102,397.35

Finding the Fourth Proportional to 20,395,020.72, 28,144,266.53 and 11,102,397.35

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Solution

The fourth proportional to 20,395,020.72, 28,144,266.53 and 11,102,397.35 is: 15,320,839.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395,020.72 : 28,144,266.53 = 11,102,397.35 : x
  2. Step 2: Convert to fraction form
    20,395,020.72/28,144,266.53 = 11,102,397.35/x
  3. Step 3: Cross multiply
    20,395,020.72x = 28,144,266.53 × 11,102,397.35
  4. Step 4: Simplify right side
    20,395,020.72x = 312,468,830,164,894.88
  5. Step 5: Solve for x
    x = 312,468,830,164,894.88/20,395,020.72
  6. Step 6: Final answer
    x = 15,320,839.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.