Home / 20,466.88-28,242.16-11,513.62

Finding the Fourth Proportional to 20,466.88, 28,242.16 and 11,513.62

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Solution

The fourth proportional to 20,466.88, 28,242.16 and 11,513.62 is: 15,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.88 : 28,242.16 = 11,513.62 : x
  2. Step 2: Convert to fraction form
    20,466.88/28,242.16 = 11,513.62/x
  3. Step 3: Cross multiply
    20,466.88x = 28,242.16 × 11,513.62
  4. Step 4: Simplify right side
    20,466.88x = 325,169,498.22
  5. Step 5: Solve for x
    x = 325,169,498.22/20,466.88
  6. Step 6: Final answer
    x = 15,887.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.