Home / 30,905.07-46,382.10-12,189.79

Finding the Fourth Proportional to 30,905.07, 46,382.10 and 12,189.79

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Solution

The fourth proportional to 30,905.07, 46,382.10 and 12,189.79 is: 18,294.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.07 : 46,382.10 = 12,189.79 : x
  2. Step 2: Convert to fraction form
    30,905.07/46,382.10 = 12,189.79/x
  3. Step 3: Cross multiply
    30,905.07x = 46,382.10 × 12,189.79
  4. Step 4: Simplify right side
    30,905.07x = 565,388,058.76
  5. Step 5: Solve for x
    x = 565,388,058.76/30,905.07
  6. Step 6: Final answer
    x = 18,294.35

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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.