Home / 20,877.40-31,318.13-6,085.99

Finding the Fourth Proportional to 20,877.40, 31,318.13 and 6,085.99

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Solution

The fourth proportional to 20,877.40, 31,318.13 and 6,085.99 is: 9,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.40 : 31,318.13 = 6,085.99 : x
  2. Step 2: Convert to fraction form
    20,877.40/31,318.13 = 6,085.99/x
  3. Step 3: Cross multiply
    20,877.40x = 31,318.13 × 6,085.99
  4. Step 4: Simplify right side
    20,877.40x = 190,601,826.00
  5. Step 5: Solve for x
    x = 190,601,826.00/20,877.40
  6. Step 6: Final answer
    x = 9,129.58

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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.