Home / 20,869.54-31,307.96-9,182.46

Finding the Fourth Proportional to 20,869.54, 31,307.96 and 9,182.46

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Solution

The fourth proportional to 20,869.54, 31,307.96 and 9,182.46 is: 13,775.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.54 : 31,307.96 = 9,182.46 : x
  2. Step 2: Convert to fraction form
    20,869.54/31,307.96 = 9,182.46/x
  3. Step 3: Cross multiply
    20,869.54x = 31,307.96 × 9,182.46
  4. Step 4: Simplify right side
    20,869.54x = 287,483,887.93
  5. Step 5: Solve for x
    x = 287,483,887.93/20,869.54
  6. Step 6: Final answer
    x = 13,775.29

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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.