Home / 21,575.19-29,772.93-12,015.47

Finding the Fourth Proportional to 21,575.19, 29,772.93 and 12,015.47

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Solution

The fourth proportional to 21,575.19, 29,772.93 and 12,015.47 is: 16,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.19 : 29,772.93 = 12,015.47 : x
  2. Step 2: Convert to fraction form
    21,575.19/29,772.93 = 12,015.47/x
  3. Step 3: Cross multiply
    21,575.19x = 29,772.93 × 12,015.47
  4. Step 4: Simplify right side
    21,575.19x = 357,735,866.72
  5. Step 5: Solve for x
    x = 357,735,866.72/21,575.19
  6. Step 6: Final answer
    x = 16,580.89

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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.