Home / 21,779.64-32,708.25-17,838.36

Finding the Fourth Proportional to 21,779.64, 32,708.25 and 17,838.36

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Solution

The fourth proportional to 21,779.64, 32,708.25 and 17,838.36 is: 26,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.64 : 32,708.25 = 17,838.36 : x
  2. Step 2: Convert to fraction form
    21,779.64/32,708.25 = 17,838.36/x
  3. Step 3: Cross multiply
    21,779.64x = 32,708.25 × 17,838.36
  4. Step 4: Simplify right side
    21,779.64x = 583,461,538.47
  5. Step 5: Solve for x
    x = 583,461,538.47/21,779.64
  6. Step 6: Final answer
    x = 26,789.31

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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.