Home / 31,201.20-46,801.80-19,391.40

Finding the Fourth Proportional to 31,201.20, 46,801.80 and 19,391.40

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Solution

The fourth proportional to 31,201.20, 46,801.80 and 19,391.40 is: 29,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.20 : 46,801.80 = 19,391.40 : x
  2. Step 2: Convert to fraction form
    31,201.20/46,801.80 = 19,391.40/x
  3. Step 3: Cross multiply
    31,201.20x = 46,801.80 × 19,391.40
  4. Step 4: Simplify right side
    31,201.20x = 907,552,424.52
  5. Step 5: Solve for x
    x = 907,552,424.52/31,201.20
  6. Step 6: Final answer
    x = 29,087.10

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1.5x scale

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.