Home / 20,483.90-28,270.47-11,533.15

Finding the Fourth Proportional to 20,483.90, 28,270.47 and 11,533.15

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Solution

The fourth proportional to 20,483.90, 28,270.47 and 11,533.15 is: 15,917.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.90 : 28,270.47 = 11,533.15 : x
  2. Step 2: Convert to fraction form
    20,483.90/28,270.47 = 11,533.15/x
  3. Step 3: Cross multiply
    20,483.90x = 28,270.47 × 11,533.15
  4. Step 4: Simplify right side
    20,483.90x = 326,047,571.08
  5. Step 5: Solve for x
    x = 326,047,571.08/20,483.90
  6. Step 6: Final answer
    x = 15,917.26

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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.