Home / 19,201.32-28,802.16-12,188.52

Finding the Fourth Proportional to 19,201.32, 28,802.16 and 12,188.52

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Solution

The fourth proportional to 19,201.32, 28,802.16 and 12,188.52 is: 18,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.32 : 28,802.16 = 12,188.52 : x
  2. Step 2: Convert to fraction form
    19,201.32/28,802.16 = 12,188.52/x
  3. Step 3: Cross multiply
    19,201.32x = 28,802.16 × 12,188.52
  4. Step 4: Simplify right side
    19,201.32x = 351,055,703.20
  5. Step 5: Solve for x
    x = 351,055,703.20/19,201.32
  6. Step 6: Final answer
    x = 18,282.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.