Home / 21,130,964.20-31,696,446.30-13,017,631.60

Finding the Fourth Proportional to 21,130,964.20, 31,696,446.30 and 13,017,631.60

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Solution

The fourth proportional to 21,130,964.20, 31,696,446.30 and 13,017,631.60 is: 19,526,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,964.20 : 31,696,446.30 = 13,017,631.60 : x
  2. Step 2: Convert to fraction form
    21,130,964.20/31,696,446.30 = 13,017,631.60/x
  3. Step 3: Cross multiply
    21,130,964.20x = 31,696,446.30 × 13,017,631.60
  4. Step 4: Simplify right side
    21,130,964.20x = 412,612,660,962,583.06
  5. Step 5: Solve for x
    x = 412,612,660,962,583.06/21,130,964.20
  6. Step 6: Final answer
    x = 19,526,447.40

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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.