Home / 30,612.30-45,934.65-13,974.90

Finding the Fourth Proportional to 30,612.30, 45,934.65 and 13,974.90

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Solution

The fourth proportional to 30,612.30, 45,934.65 and 13,974.90 is: 20,969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.30 : 45,934.65 = 13,974.90 : x
  2. Step 2: Convert to fraction form
    30,612.30/45,934.65 = 13,974.90/x
  3. Step 3: Cross multiply
    30,612.30x = 45,934.65 × 13,974.90
  4. Step 4: Simplify right side
    30,612.30x = 641,932,140.29
  5. Step 5: Solve for x
    x = 641,932,140.29/30,612.30
  6. Step 6: Final answer
    x = 20,969.75

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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.