Home / 20,985.27-31,488.83-9,295.75

Finding the Fourth Proportional to 20,985.27, 31,488.83 and 9,295.75

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Solution

The fourth proportional to 20,985.27, 31,488.83 and 9,295.75 is: 13,948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.27 : 31,488.83 = 9,295.75 : x
  2. Step 2: Convert to fraction form
    20,985.27/31,488.83 = 9,295.75/x
  3. Step 3: Cross multiply
    20,985.27x = 31,488.83 × 9,295.75
  4. Step 4: Simplify right side
    20,985.27x = 292,712,291.47
  5. Step 5: Solve for x
    x = 292,712,291.47/20,985.27
  6. Step 6: Final answer
    x = 13,948.46

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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.