Home / 31,201.47-46,801.79-20,178.99

Finding the Fourth Proportional to 31,201.47, 46,801.79 and 20,178.99

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Solution

The fourth proportional to 31,201.47, 46,801.79 and 20,178.99 is: 30,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.47 : 46,801.79 = 20,178.99 : x
  2. Step 2: Convert to fraction form
    31,201.47/46,801.79 = 20,178.99/x
  3. Step 3: Cross multiply
    31,201.47x = 46,801.79 × 20,178.99
  4. Step 4: Simplify right side
    31,201.47x = 944,412,852.39
  5. Step 5: Solve for x
    x = 944,412,852.39/31,201.47
  6. Step 6: Final answer
    x = 30,268.22

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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.