Home / 20,313.09-30,382.16-18,077.49

Finding the Fourth Proportional to 20,313.09, 30,382.16 and 18,077.49

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Solution

The fourth proportional to 20,313.09, 30,382.16 and 18,077.49 is: 27,038.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.09 : 30,382.16 = 18,077.49 : x
  2. Step 2: Convert to fraction form
    20,313.09/30,382.16 = 18,077.49/x
  3. Step 3: Cross multiply
    20,313.09x = 30,382.16 × 18,077.49
  4. Step 4: Simplify right side
    20,313.09x = 549,233,103.19
  5. Step 5: Solve for x
    x = 549,233,103.19/20,313.09
  6. Step 6: Final answer
    x = 27,038.38

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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.