Home / 21,081,948,750.90-31,621,809,386.44-6,915,048,387.51

Finding the Fourth Proportional to 21,081,948,750.90, 31,621,809,386.44 and 6,915,048,387.51

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Solution

The fourth proportional to 21,081,948,750.90, 31,621,809,386.44 and 6,915,048,387.51 is: 10,372,207,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081,948,750.90 : 31,621,809,386.44 = 6,915,048,387.51 : x
  2. Step 2: Convert to fraction form
    21,081,948,750.90/31,621,809,386.44 = 6,915,048,387.51/x
  3. Step 3: Cross multiply
    21,081,948,750.90x = 31,621,809,386.44 × 6,915,048,387.51
  4. Step 4: Simplify right side
    21,081,948,750.90x = 218,666,342,007,976,984,576
  5. Step 5: Solve for x
    x = 218,666,342,007,976,984,576/21,081,948,750.90
  6. Step 6: Final answer
    x = 10,372,207,265.64

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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.