Home / 20,583.29-28,388.04-12,619.91

Finding the Fourth Proportional to 20,583.29, 28,388.04 and 12,619.91

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Solution

The fourth proportional to 20,583.29, 28,388.04 and 12,619.91 is: 17,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.29 : 28,388.04 = 12,619.91 : x
  2. Step 2: Convert to fraction form
    20,583.29/28,388.04 = 12,619.91/x
  3. Step 3: Cross multiply
    20,583.29x = 28,388.04 × 12,619.91
  4. Step 4: Simplify right side
    20,583.29x = 358,254,533.52
  5. Step 5: Solve for x
    x = 358,254,533.52/20,583.29
  6. Step 6: Final answer
    x = 17,405.11

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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.