Home / 21,030.80-31,546.07-5,235.75

Finding the Fourth Proportional to 21,030.80, 31,546.07 and 5,235.75

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Solution

The fourth proportional to 21,030.80, 31,546.07 and 5,235.75 is: 7,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.80 : 31,546.07 = 5,235.75 : x
  2. Step 2: Convert to fraction form
    21,030.80/31,546.07 = 5,235.75/x
  3. Step 3: Cross multiply
    21,030.80x = 31,546.07 × 5,235.75
  4. Step 4: Simplify right side
    21,030.80x = 165,167,336.00
  5. Step 5: Solve for x
    x = 165,167,336.00/21,030.80
  6. Step 6: Final answer
    x = 7,853.59

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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.