Home / 20,561.31-30,835.01-9,461.95

Finding the Fourth Proportional to 20,561.31, 30,835.01 and 9,461.95

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Solution

The fourth proportional to 20,561.31, 30,835.01 and 9,461.95 is: 14,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.31 : 30,835.01 = 9,461.95 : x
  2. Step 2: Convert to fraction form
    20,561.31/30,835.01 = 9,461.95/x
  3. Step 3: Cross multiply
    20,561.31x = 30,835.01 × 9,461.95
  4. Step 4: Simplify right side
    20,561.31x = 291,759,269.44
  5. Step 5: Solve for x
    x = 291,759,269.44/20,561.31
  6. Step 6: Final answer
    x = 14,189.72

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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.