Home / 20,436.48-28,199.43-11,483.55

Finding the Fourth Proportional to 20,436.48, 28,199.43 and 11,483.55

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Solution

The fourth proportional to 20,436.48, 28,199.43 and 11,483.55 is: 15,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.48 : 28,199.43 = 11,483.55 : x
  2. Step 2: Convert to fraction form
    20,436.48/28,199.43 = 11,483.55/x
  3. Step 3: Cross multiply
    20,436.48x = 28,199.43 × 11,483.55
  4. Step 4: Simplify right side
    20,436.48x = 323,829,564.38
  5. Step 5: Solve for x
    x = 323,829,564.38/20,436.48
  6. Step 6: Final answer
    x = 15,845.66

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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.