Home / 21,336.16-32,004.80-12,577.36

Finding the Fourth Proportional to 21,336.16, 32,004.80 and 12,577.36

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Solution

The fourth proportional to 21,336.16, 32,004.80 and 12,577.36 is: 18,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.16 : 32,004.80 = 12,577.36 : x
  2. Step 2: Convert to fraction form
    21,336.16/32,004.80 = 12,577.36/x
  3. Step 3: Cross multiply
    21,336.16x = 32,004.80 × 12,577.36
  4. Step 4: Simplify right side
    21,336.16x = 402,535,891.33
  5. Step 5: Solve for x
    x = 402,535,891.33/21,336.16
  6. Step 6: Final answer
    x = 18,866.37

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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.