Home / 15,215,097,771.58-20,988,111,386.43-9,489,441,754.64

Finding the Fourth Proportional to 15,215,097,771.58, 20,988,111,386.43 and 9,489,441,754.64

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Solution

The fourth proportional to 15,215,097,771.58, 20,988,111,386.43 and 9,489,441,754.64 is: 13,089,988,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215,097,771.58 : 20,988,111,386.43 = 9,489,441,754.64 : x
  2. Step 2: Convert to fraction form
    15,215,097,771.58/20,988,111,386.43 = 9,489,441,754.64/x
  3. Step 3: Cross multiply
    15,215,097,771.58x = 20,988,111,386.43 × 9,489,441,754.64
  4. Step 4: Simplify right side
    15,215,097,771.58x = 199,165,460,541,424,041,984
  5. Step 5: Solve for x
    x = 199,165,460,541,424,041,984/15,215,097,771.58
  6. Step 6: Final answer
    x = 13,089,988,873.65

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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.