Home / 20,690.46-31,016.49-9,437.34

Finding the Fourth Proportional to 20,690.46, 31,016.49 and 9,437.34

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Solution

The fourth proportional to 20,690.46, 31,016.49 and 9,437.34 is: 14,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.46 : 31,016.49 = 9,437.34 : x
  2. Step 2: Convert to fraction form
    20,690.46/31,016.49 = 9,437.34/x
  3. Step 3: Cross multiply
    20,690.46x = 31,016.49 × 9,437.34
  4. Step 4: Simplify right side
    20,690.46x = 292,713,161.74
  5. Step 5: Solve for x
    x = 292,713,161.74/20,690.46
  6. Step 6: Final answer
    x = 14,147.25

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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.