Home / 20,690.89-31,036.37-9,596.12

Finding the Fourth Proportional to 20,690.89, 31,036.37 and 9,596.12

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Solution

The fourth proportional to 20,690.89, 31,036.37 and 9,596.12 is: 14,394.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.89 : 31,036.37 = 9,596.12 : x
  2. Step 2: Convert to fraction form
    20,690.89/31,036.37 = 9,596.12/x
  3. Step 3: Cross multiply
    20,690.89x = 31,036.37 × 9,596.12
  4. Step 4: Simplify right side
    20,690.89x = 297,828,702.30
  5. Step 5: Solve for x
    x = 297,828,702.30/20,690.89
  6. Step 6: Final answer
    x = 14,394.19

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1.5x scale

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.