Home / 21,450.39-32,158.31-9,147.03

Finding the Fourth Proportional to 21,450.39, 32,158.31 and 9,147.03

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Solution

The fourth proportional to 21,450.39, 32,158.31 and 9,147.03 is: 13,713.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.39 : 32,158.31 = 9,147.03 : x
  2. Step 2: Convert to fraction form
    21,450.39/32,158.31 = 9,147.03/x
  3. Step 3: Cross multiply
    21,450.39x = 32,158.31 × 9,147.03
  4. Step 4: Simplify right side
    21,450.39x = 294,152,980.58
  5. Step 5: Solve for x
    x = 294,152,980.58/21,450.39
  6. Step 6: Final answer
    x = 13,713.18

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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.