Home / 20,881.95-31,308.03-9,782.58

Finding the Fourth Proportional to 20,881.95, 31,308.03 and 9,782.58

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Solution

The fourth proportional to 20,881.95, 31,308.03 and 9,782.58 is: 14,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.95 : 31,308.03 = 9,782.58 : x
  2. Step 2: Convert to fraction form
    20,881.95/31,308.03 = 9,782.58/x
  3. Step 3: Cross multiply
    20,881.95x = 31,308.03 × 9,782.58
  4. Step 4: Simplify right side
    20,881.95x = 306,273,308.12
  5. Step 5: Solve for x
    x = 306,273,308.12/20,881.95
  6. Step 6: Final answer
    x = 14,666.89

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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.