Home / 20,964.83-28,931.58-12,012.71

Finding the Fourth Proportional to 20,964.83, 28,931.58 and 12,012.71

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Solution

The fourth proportional to 20,964.83, 28,931.58 and 12,012.71 is: 16,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.83 : 28,931.58 = 12,012.71 : x
  2. Step 2: Convert to fraction form
    20,964.83/28,931.58 = 12,012.71/x
  3. Step 3: Cross multiply
    20,964.83x = 28,931.58 × 12,012.71
  4. Step 4: Simplify right side
    20,964.83x = 347,546,535.72
  5. Step 5: Solve for x
    x = 347,546,535.72/20,964.83
  6. Step 6: Final answer
    x = 16,577.60

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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.