Home / 31,783.28-43,858.02-18,860.33

Finding the Fourth Proportional to 31,783.28, 43,858.02 and 18,860.33

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Solution

The fourth proportional to 31,783.28, 43,858.02 and 18,860.33 is: 26,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,783.28 : 43,858.02 = 18,860.33 : x
  2. Step 2: Convert to fraction form
    31,783.28/43,858.02 = 18,860.33/x
  3. Step 3: Cross multiply
    31,783.28x = 43,858.02 × 18,860.33
  4. Step 4: Simplify right side
    31,783.28x = 827,176,511.06
  5. Step 5: Solve for x
    x = 827,176,511.06/31,783.28
  6. Step 6: Final answer
    x = 26,025.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.