Home / 20,628.48-28,466.48-11,196.80

Finding the Fourth Proportional to 20,628.48, 28,466.48 and 11,196.80

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Solution

The fourth proportional to 20,628.48, 28,466.48 and 11,196.80 is: 15,451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.48 : 28,466.48 = 11,196.80 : x
  2. Step 2: Convert to fraction form
    20,628.48/28,466.48 = 11,196.80/x
  3. Step 3: Cross multiply
    20,628.48x = 28,466.48 × 11,196.80
  4. Step 4: Simplify right side
    20,628.48x = 318,733,483.26
  5. Step 5: Solve for x
    x = 318,733,483.26/20,628.48
  6. Step 6: Final answer
    x = 15,451.14

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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.