Home / 21,421.52-32,138.84-9,585.25

Finding the Fourth Proportional to 21,421.52, 32,138.84 and 9,585.25

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Solution

The fourth proportional to 21,421.52, 32,138.84 and 9,585.25 is: 14,380.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.52 : 32,138.84 = 9,585.25 : x
  2. Step 2: Convert to fraction form
    21,421.52/32,138.84 = 9,585.25/x
  3. Step 3: Cross multiply
    21,421.52x = 32,138.84 × 9,585.25
  4. Step 4: Simplify right side
    21,421.52x = 308,058,940.51
  5. Step 5: Solve for x
    x = 308,058,940.51/21,421.52
  6. Step 6: Final answer
    x = 14,380.82

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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.