Home / 30,890.78-46,339.77-11,178.62

Finding the Fourth Proportional to 30,890.78, 46,339.77 and 11,178.62

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Solution

The fourth proportional to 30,890.78, 46,339.77 and 11,178.62 is: 16,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.78 : 46,339.77 = 11,178.62 : x
  2. Step 2: Convert to fraction form
    30,890.78/46,339.77 = 11,178.62/x
  3. Step 3: Cross multiply
    30,890.78x = 46,339.77 × 11,178.62
  4. Step 4: Simplify right side
    30,890.78x = 518,014,679.72
  5. Step 5: Solve for x
    x = 518,014,679.72/30,890.78
  6. Step 6: Final answer
    x = 16,769.23

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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.