Home / 21,696,268.47-29,938,871.43-12,874,199.28

Finding the Fourth Proportional to 21,696,268.47, 29,938,871.43 and 12,874,199.28

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Solution

The fourth proportional to 21,696,268.47, 29,938,871.43 and 12,874,199.28 is: 17,765,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696,268.47 : 29,938,871.43 = 12,874,199.28 : x
  2. Step 2: Convert to fraction form
    21,696,268.47/29,938,871.43 = 12,874,199.28/x
  3. Step 3: Cross multiply
    21,696,268.47x = 29,938,871.43 × 12,874,199.28
  4. Step 4: Simplify right side
    21,696,268.47x = 385,438,997,008,118.56
  5. Step 5: Solve for x
    x = 385,438,997,008,118.56/21,696,268.47
  6. Step 6: Final answer
    x = 17,765,220.67

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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.