Home / 21,307,383,882.47-31,968,173,878.07-7,143,751,153.55

Finding the Fourth Proportional to 21,307,383,882.47, 31,968,173,878.07 and 7,143,751,153.55

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Solution

The fourth proportional to 21,307,383,882.47, 31,968,173,878.07 and 7,143,751,153.55 is: 10,718,006,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307,383,882.47 : 31,968,173,878.07 = 7,143,751,153.55 : x
  2. Step 2: Convert to fraction form
    21,307,383,882.47/31,968,173,878.07 = 7,143,751,153.55/x
  3. Step 3: Cross multiply
    21,307,383,882.47x = 31,968,173,878.07 × 7,143,751,153.55
  4. Step 4: Simplify right side
    21,307,383,882.47x = 228,372,679,018,153,967,616
  5. Step 5: Solve for x
    x = 228,372,679,018,153,967,616/21,307,383,882.47
  6. Step 6: Final answer
    x = 10,718,006,503.19

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1.5x scale

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.