Home / 20,958.96-28,925.28-12,009.36

Finding the Fourth Proportional to 20,958.96, 28,925.28 and 12,009.36

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Solution

The fourth proportional to 20,958.96, 28,925.28 and 12,009.36 is: 16,574.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.96 : 28,925.28 = 12,009.36 : x
  2. Step 2: Convert to fraction form
    20,958.96/28,925.28 = 12,009.36/x
  3. Step 3: Cross multiply
    20,958.96x = 28,925.28 × 12,009.36
  4. Step 4: Simplify right side
    20,958.96x = 347,374,100.62
  5. Step 5: Solve for x
    x = 347,374,100.62/20,958.96
  6. Step 6: Final answer
    x = 16,574.01

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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.