Home / 30,873.08-42,606.81-18,934.79

Finding the Fourth Proportional to 30,873.08, 42,606.81 and 18,934.79

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Solution

The fourth proportional to 30,873.08, 42,606.81 and 18,934.79 is: 26,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.08 : 42,606.81 = 18,934.79 : x
  2. Step 2: Convert to fraction form
    30,873.08/42,606.81 = 18,934.79/x
  3. Step 3: Cross multiply
    30,873.08x = 42,606.81 × 18,934.79
  4. Step 4: Simplify right side
    30,873.08x = 806,750,999.92
  5. Step 5: Solve for x
    x = 806,750,999.92/30,873.08
  6. Step 6: Final answer
    x = 26,131.21

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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.