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Finding the Fourth Proportional to 15,203.96, 20,962.26 and 12,933.08

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Solution

The fourth proportional to 15,203.96, 20,962.26 and 12,933.08 is: 17,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203.96 : 20,962.26 = 12,933.08 : x
  2. Step 2: Convert to fraction form
    15,203.96/20,962.26 = 12,933.08/x
  3. Step 3: Cross multiply
    15,203.96x = 20,962.26 × 12,933.08
  4. Step 4: Simplify right side
    15,203.96x = 271,106,585.56
  5. Step 5: Solve for x
    x = 271,106,585.56/15,203.96
  6. Step 6: Final answer
    x = 17,831.31

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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.