Home / 20,529.64-28,317.56-12,568.96

Finding the Fourth Proportional to 20,529.64, 28,317.56 and 12,568.96

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Solution

The fourth proportional to 20,529.64, 28,317.56 and 12,568.96 is: 17,337.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.64 : 28,317.56 = 12,568.96 : x
  2. Step 2: Convert to fraction form
    20,529.64/28,317.56 = 12,568.96/x
  3. Step 3: Cross multiply
    20,529.64x = 28,317.56 × 12,568.96
  4. Step 4: Simplify right side
    20,529.64x = 355,922,278.94
  5. Step 5: Solve for x
    x = 355,922,278.94/20,529.64
  6. Step 6: Final answer
    x = 17,337.00

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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.