Home / 21,137,538.80-31,706,308.20-19,709,865.20

Finding the Fourth Proportional to 21,137,538.80, 31,706,308.20 and 19,709,865.20

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Solution

The fourth proportional to 21,137,538.80, 31,706,308.20 and 19,709,865.20 is: 29,564,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137,538.80 : 31,706,308.20 = 19,709,865.20 : x
  2. Step 2: Convert to fraction form
    21,137,538.80/31,706,308.20 = 19,709,865.20/x
  3. Step 3: Cross multiply
    21,137,538.80x = 31,706,308.20 × 19,709,865.20
  4. Step 4: Simplify right side
    21,137,538.80x = 624,927,060,611,654.62
  5. Step 5: Solve for x
    x = 624,927,060,611,654.62/21,137,538.80
  6. Step 6: Final answer
    x = 29,564,797.80

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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.