Home / 30,693.95-42,359.39-20,467.33

Finding the Fourth Proportional to 30,693.95, 42,359.39 and 20,467.33

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Solution

The fourth proportional to 30,693.95, 42,359.39 and 20,467.33 is: 28,246.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,693.95 : 42,359.39 = 20,467.33 : x
  2. Step 2: Convert to fraction form
    30,693.95/42,359.39 = 20,467.33/x
  3. Step 3: Cross multiply
    30,693.95x = 42,359.39 × 20,467.33
  4. Step 4: Simplify right side
    30,693.95x = 866,983,720.52
  5. Step 5: Solve for x
    x = 866,983,720.52/30,693.95
  6. Step 6: Final answer
    x = 28,246.07

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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.