Home / 20,730,133.50-28,616,757.48-13,391,544.84

Finding the Fourth Proportional to 20,730,133.50, 28,616,757.48 and 13,391,544.84

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Solution

The fourth proportional to 20,730,133.50, 28,616,757.48 and 13,391,544.84 is: 18,486,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,133.50 : 28,616,757.48 = 13,391,544.84 : x
  2. Step 2: Convert to fraction form
    20,730,133.50/28,616,757.48 = 13,391,544.84/x
  3. Step 3: Cross multiply
    20,730,133.50x = 28,616,757.48 × 13,391,544.84
  4. Step 4: Simplify right side
    20,730,133.50x = 383,222,590,968,825.38
  5. Step 5: Solve for x
    x = 383,222,590,968,825.38/20,730,133.50
  6. Step 6: Final answer
    x = 18,486,257.74

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1.5x scale

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.