Home / 21,263,592.80-31,919,008.80-13,185,689.60

Finding the Fourth Proportional to 21,263,592.80, 31,919,008.80 and 13,185,689.60

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Solution

The fourth proportional to 21,263,592.80, 31,919,008.80 and 13,185,689.60 is: 19,793,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263,592.80 : 31,919,008.80 = 13,185,689.60 : x
  2. Step 2: Convert to fraction form
    21,263,592.80/31,919,008.80 = 13,185,689.60/x
  3. Step 3: Cross multiply
    21,263,592.80x = 31,919,008.80 × 13,185,689.60
  4. Step 4: Simplify right side
    21,263,592.80x = 420,874,142,376,468.50
  5. Step 5: Solve for x
    x = 420,874,142,376,468.50/21,263,592.80
  6. Step 6: Final answer
    x = 19,793,181.06

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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.