Home / 20,964.48-28,930.99-12,017.18

Finding the Fourth Proportional to 20,964.48, 28,930.99 and 12,017.18

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Solution

The fourth proportional to 20,964.48, 28,930.99 and 12,017.18 is: 16,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.48 : 28,930.99 = 12,017.18 : x
  2. Step 2: Convert to fraction form
    20,964.48/28,930.99 = 12,017.18/x
  3. Step 3: Cross multiply
    20,964.48x = 28,930.99 × 12,017.18
  4. Step 4: Simplify right side
    20,964.48x = 347,668,739.71
  5. Step 5: Solve for x
    x = 347,668,739.71/20,964.48
  6. Step 6: Final answer
    x = 16,583.70

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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.