Home / 21,307,383,877.47-31,968,173,870.57-7,143,751,148.55

Finding the Fourth Proportional to 21,307,383,877.47, 31,968,173,870.57 and 7,143,751,148.55

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Solution

The fourth proportional to 21,307,383,877.47, 31,968,173,870.57 and 7,143,751,148.55 is: 10,718,006,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307,383,877.47 : 31,968,173,870.57 = 7,143,751,148.55 : x
  2. Step 2: Convert to fraction form
    21,307,383,877.47/31,968,173,870.57 = 7,143,751,148.55/x
  3. Step 3: Cross multiply
    21,307,383,877.47x = 31,968,173,870.57 × 7,143,751,148.55
  4. Step 4: Simplify right side
    21,307,383,877.47x = 228,372,678,804,930,527,232
  5. Step 5: Solve for x
    x = 228,372,678,804,930,527,232/21,307,383,877.47
  6. Step 6: Final answer
    x = 10,718,006,495.69

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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.