Home / 21,114,485.40-31,687,650.66-15,449,325.72

Finding the Fourth Proportional to 21,114,485.40, 31,687,650.66 and 15,449,325.72

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Solution

The fourth proportional to 21,114,485.40, 31,687,650.66 and 15,449,325.72 is: 23,185,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114,485.40 : 31,687,650.66 = 15,449,325.72 : x
  2. Step 2: Convert to fraction form
    21,114,485.40/31,687,650.66 = 15,449,325.72/x
  3. Step 3: Cross multiply
    21,114,485.40x = 31,687,650.66 × 15,449,325.72
  4. Step 4: Simplify right side
    21,114,485.40x = 489,552,836,347,913
  5. Step 5: Solve for x
    x = 489,552,836,347,913/21,114,485.40
  6. Step 6: Final answer
    x = 23,185,639.01

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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.