Home / 20,583.23-28,387.95-12,619.85

Finding the Fourth Proportional to 20,583.23, 28,387.95 and 12,619.85

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Solution

The fourth proportional to 20,583.23, 28,387.95 and 12,619.85 is: 17,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.23 : 28,387.95 = 12,619.85 : x
  2. Step 2: Convert to fraction form
    20,583.23/28,387.95 = 12,619.85/x
  3. Step 3: Cross multiply
    20,583.23x = 28,387.95 × 12,619.85
  4. Step 4: Simplify right side
    20,583.23x = 358,251,670.81
  5. Step 5: Solve for x
    x = 358,251,670.81/20,583.23
  6. Step 6: Final answer
    x = 17,405.03

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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.