Home / 20,483.45-28,266.09-11,530.66

Finding the Fourth Proportional to 20,483.45, 28,266.09 and 11,530.66

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Solution

The fourth proportional to 20,483.45, 28,266.09 and 11,530.66 is: 15,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.45 : 28,266.09 = 11,530.66 : x
  2. Step 2: Convert to fraction form
    20,483.45/28,266.09 = 11,530.66/x
  3. Step 3: Cross multiply
    20,483.45x = 28,266.09 × 11,530.66
  4. Step 4: Simplify right side
    20,483.45x = 325,926,538.49
  5. Step 5: Solve for x
    x = 325,926,538.49/20,483.45
  6. Step 6: Final answer
    x = 15,911.70

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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.