Home / 21,763.71-30,029.81-20,656.44

Finding the Fourth Proportional to 21,763.71, 30,029.81 and 20,656.44

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Solution

The fourth proportional to 21,763.71, 30,029.81 and 20,656.44 is: 28,501.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.71 : 30,029.81 = 20,656.44 : x
  2. Step 2: Convert to fraction form
    21,763.71/30,029.81 = 20,656.44/x
  3. Step 3: Cross multiply
    21,763.71x = 30,029.81 × 20,656.44
  4. Step 4: Simplify right side
    21,763.71x = 620,308,865.19
  5. Step 5: Solve for x
    x = 620,308,865.19/21,763.71
  6. Step 6: Final answer
    x = 28,501.98

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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.