Home / 20,483.89-28,270.46-11,533.13

Finding the Fourth Proportional to 20,483.89, 28,270.46 and 11,533.13

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Solution

The fourth proportional to 20,483.89, 28,270.46 and 11,533.13 is: 15,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.89 : 28,270.46 = 11,533.13 : x
  2. Step 2: Convert to fraction form
    20,483.89/28,270.46 = 11,533.13/x
  3. Step 3: Cross multiply
    20,483.89x = 28,270.46 × 11,533.13
  4. Step 4: Simplify right side
    20,483.89x = 326,046,932.18
  5. Step 5: Solve for x
    x = 326,046,932.18/20,483.89
  6. Step 6: Final answer
    x = 15,917.24

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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.