Home / 15,729,071,361.42-21,711,291,291.84-12,519,868,059.54

Finding the Fourth Proportional to 15,729,071,361.42, 21,711,291,291.84 and 12,519,868,059.54

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Solution

The fourth proportional to 15,729,071,361.42, 21,711,291,291.84 and 12,519,868,059.54 is: 17,281,535,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729,071,361.42 : 21,711,291,291.84 = 12,519,868,059.54 : x
  2. Step 2: Convert to fraction form
    15,729,071,361.42/21,711,291,291.84 = 12,519,868,059.54/x
  3. Step 3: Cross multiply
    15,729,071,361.42x = 21,711,291,291.84 × 12,519,868,059.54
  4. Step 4: Simplify right side
    15,729,071,361.42x = 271,822,502,376,076,574,720
  5. Step 5: Solve for x
    x = 271,822,502,376,076,574,720/15,729,071,361.42
  6. Step 6: Final answer
    x = 17,281,535,325.91

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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.