Home / 15,918.63-21,952.62-12,135.12

Finding the Fourth Proportional to 15,918.63, 21,952.62 and 12,135.12

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Solution

The fourth proportional to 15,918.63, 21,952.62 and 12,135.12 is: 16,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.63 : 21,952.62 = 12,135.12 : x
  2. Step 2: Convert to fraction form
    15,918.63/21,952.62 = 12,135.12/x
  3. Step 3: Cross multiply
    15,918.63x = 21,952.62 × 12,135.12
  4. Step 4: Simplify right side
    15,918.63x = 266,397,678.01
  5. Step 5: Solve for x
    x = 266,397,678.01/15,918.63
  6. Step 6: Final answer
    x = 16,734.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.