Home / 21,245.08-31,867.68-6,454.12

Finding the Fourth Proportional to 21,245.08, 31,867.68 and 6,454.12

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Solution

The fourth proportional to 21,245.08, 31,867.68 and 6,454.12 is: 9,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.08 : 31,867.68 = 6,454.12 : x
  2. Step 2: Convert to fraction form
    21,245.08/31,867.68 = 6,454.12/x
  3. Step 3: Cross multiply
    21,245.08x = 31,867.68 × 6,454.12
  4. Step 4: Simplify right side
    21,245.08x = 205,677,830.84
  5. Step 5: Solve for x
    x = 205,677,830.84/21,245.08
  6. Step 6: Final answer
    x = 9,681.20

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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.