Home / 21,450.09-32,186.15-10,218.15

Finding the Fourth Proportional to 21,450.09, 32,186.15 and 10,218.15

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Solution

The fourth proportional to 21,450.09, 32,186.15 and 10,218.15 is: 15,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.09 : 32,186.15 = 10,218.15 : x
  2. Step 2: Convert to fraction form
    21,450.09/32,186.15 = 10,218.15/x
  3. Step 3: Cross multiply
    21,450.09x = 32,186.15 × 10,218.15
  4. Step 4: Simplify right side
    21,450.09x = 328,882,857.53
  5. Step 5: Solve for x
    x = 328,882,857.53/21,450.09
  6. Step 6: Final answer
    x = 15,332.47

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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.