Home / 21,294,446.40-31,941,669.60-13,232,289.60

Finding the Fourth Proportional to 21,294,446.40, 31,941,669.60 and 13,232,289.60

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Solution

The fourth proportional to 21,294,446.40, 31,941,669.60 and 13,232,289.60 is: 19,848,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,446.40 : 31,941,669.60 = 13,232,289.60 : x
  2. Step 2: Convert to fraction form
    21,294,446.40/31,941,669.60 = 13,232,289.60/x
  3. Step 3: Cross multiply
    21,294,446.40x = 31,941,669.60 × 13,232,289.60
  4. Step 4: Simplify right side
    21,294,446.40x = 422,661,422,454,716.19
  5. Step 5: Solve for x
    x = 422,661,422,454,716.19/21,294,446.40
  6. Step 6: Final answer
    x = 19,848,434.40

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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.