Home / 30,645.36-45,939.42-11,937.60

Finding the Fourth Proportional to 30,645.36, 45,939.42 and 11,937.60

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Solution

The fourth proportional to 30,645.36, 45,939.42 and 11,937.60 is: 17,895.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.36 : 45,939.42 = 11,937.60 : x
  2. Step 2: Convert to fraction form
    30,645.36/45,939.42 = 11,937.60/x
  3. Step 3: Cross multiply
    30,645.36x = 45,939.42 × 11,937.60
  4. Step 4: Simplify right side
    30,645.36x = 548,406,420.19
  5. Step 5: Solve for x
    x = 548,406,420.19/30,645.36
  6. Step 6: Final answer
    x = 17,895.25

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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.