Home / 21,273,513.40-31,863,030.90-18,439,161.40

Finding the Fourth Proportional to 21,273,513.40, 31,863,030.90 and 18,439,161.40

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Solution

The fourth proportional to 21,273,513.40, 31,863,030.90 and 18,439,161.40 is: 27,617,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273,513.40 : 31,863,030.90 = 18,439,161.40 : x
  2. Step 2: Convert to fraction form
    21,273,513.40/31,863,030.90 = 18,439,161.40/x
  3. Step 3: Cross multiply
    21,273,513.40x = 31,863,030.90 × 18,439,161.40
  4. Step 4: Simplify right side
    21,273,513.40x = 587,527,569,458,287.12
  5. Step 5: Solve for x
    x = 587,527,569,458,287.12/21,273,513.40
  6. Step 6: Final answer
    x = 27,617,796.76

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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.