Home / 20,973.54-31,471.20-19,763.40

Finding the Fourth Proportional to 20,973.54, 31,471.20 and 19,763.40

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Solution

The fourth proportional to 20,973.54, 31,471.20 and 19,763.40 is: 29,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.54 : 31,471.20 = 19,763.40 : x
  2. Step 2: Convert to fraction form
    20,973.54/31,471.20 = 19,763.40/x
  3. Step 3: Cross multiply
    20,973.54x = 31,471.20 × 19,763.40
  4. Step 4: Simplify right side
    20,973.54x = 621,977,914.08
  5. Step 5: Solve for x
    x = 621,977,914.08/20,973.54
  6. Step 6: Final answer
    x = 29,655.36

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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.