Home / 15,322,915.70-21,145,768.12-8,447,643.80

Finding the Fourth Proportional to 15,322,915.70, 21,145,768.12 and 8,447,643.80

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Solution

The fourth proportional to 15,322,915.70, 21,145,768.12 and 8,447,643.80 is: 11,657,828.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322,915.70 : 21,145,768.12 = 8,447,643.80 : x
  2. Step 2: Convert to fraction form
    15,322,915.70/21,145,768.12 = 8,447,643.80/x
  3. Step 3: Cross multiply
    15,322,915.70x = 21,145,768.12 × 8,447,643.80
  4. Step 4: Simplify right side
    15,322,915.70x = 178,631,916,891,765.03
  5. Step 5: Solve for x
    x = 178,631,916,891,765.03/15,322,915.70
  6. Step 6: Final answer
    x = 11,657,828.08

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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.