Home / 21,130,961.20-31,696,441.80-13,017,628.60

Finding the Fourth Proportional to 21,130,961.20, 31,696,441.80 and 13,017,628.60

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Solution

The fourth proportional to 21,130,961.20, 31,696,441.80 and 13,017,628.60 is: 19,526,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,961.20 : 31,696,441.80 = 13,017,628.60 : x
  2. Step 2: Convert to fraction form
    21,130,961.20/31,696,441.80 = 13,017,628.60/x
  3. Step 3: Cross multiply
    21,130,961.20x = 31,696,441.80 × 13,017,628.60
  4. Step 4: Simplify right side
    21,130,961.20x = 412,612,507,293,915.50
  5. Step 5: Solve for x
    x = 412,612,507,293,915.50/21,130,961.20
  6. Step 6: Final answer
    x = 19,526,442.90

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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.