Home / 21,248.21-31,884.62-8,765.93

Finding the Fourth Proportional to 21,248.21, 31,884.62 and 8,765.93

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Solution

The fourth proportional to 21,248.21, 31,884.62 and 8,765.93 is: 13,153.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.21 : 31,884.62 = 8,765.93 : x
  2. Step 2: Convert to fraction form
    21,248.21/31,884.62 = 8,765.93/x
  3. Step 3: Cross multiply
    21,248.21x = 31,884.62 × 8,765.93
  4. Step 4: Simplify right side
    21,248.21x = 279,498,143.74
  5. Step 5: Solve for x
    x = 279,498,143.74/21,248.21
  6. Step 6: Final answer
    x = 13,153.96

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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.