Home / 20,483.25-28,267.43-11,531.08

Finding the Fourth Proportional to 20,483.25, 28,267.43 and 11,531.08

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Solution

The fourth proportional to 20,483.25, 28,267.43 and 11,531.08 is: 15,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.25 : 28,267.43 = 11,531.08 : x
  2. Step 2: Convert to fraction form
    20,483.25/28,267.43 = 11,531.08/x
  3. Step 3: Cross multiply
    20,483.25x = 28,267.43 × 11,531.08
  4. Step 4: Simplify right side
    20,483.25x = 325,953,974.40
  5. Step 5: Solve for x
    x = 325,953,974.40/20,483.25
  6. Step 6: Final answer
    x = 15,913.19

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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.