Home / 30,920.49-46,380.87-13,146.57

Finding the Fourth Proportional to 30,920.49, 46,380.87 and 13,146.57

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Solution

The fourth proportional to 30,920.49, 46,380.87 and 13,146.57 is: 19,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.49 : 46,380.87 = 13,146.57 : x
  2. Step 2: Convert to fraction form
    30,920.49/46,380.87 = 13,146.57/x
  3. Step 3: Cross multiply
    30,920.49x = 46,380.87 × 13,146.57
  4. Step 4: Simplify right side
    30,920.49x = 609,749,354.12
  5. Step 5: Solve for x
    x = 609,749,354.12/30,920.49
  6. Step 6: Final answer
    x = 19,719.91

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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.