Home / 20,971,131.12-28,939,708.58-11,552,185.53

Finding the Fourth Proportional to 20,971,131.12, 28,939,708.58 and 11,552,185.53

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Solution

The fourth proportional to 20,971,131.12, 28,939,708.58 and 11,552,185.53 is: 15,941,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,131.12 : 28,939,708.58 = 11,552,185.53 : x
  2. Step 2: Convert to fraction form
    20,971,131.12/28,939,708.58 = 11,552,185.53/x
  3. Step 3: Cross multiply
    20,971,131.12x = 28,939,708.58 × 11,552,185.53
  4. Step 4: Simplify right side
    20,971,131.12x = 334,316,882,642,531.88
  5. Step 5: Solve for x
    x = 334,316,882,642,531.88/20,971,131.12
  6. Step 6: Final answer
    x = 15,941,766.84

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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.