Home / 21,859.65-30,139.43-16,186.41

Finding the Fourth Proportional to 21,859.65, 30,139.43 and 16,186.41

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Solution

The fourth proportional to 21,859.65, 30,139.43 and 16,186.41 is: 22,317.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.65 : 30,139.43 = 16,186.41 : x
  2. Step 2: Convert to fraction form
    21,859.65/30,139.43 = 16,186.41/x
  3. Step 3: Cross multiply
    21,859.65x = 30,139.43 × 16,186.41
  4. Step 4: Simplify right side
    21,859.65x = 487,849,090.21
  5. Step 5: Solve for x
    x = 487,849,090.21/21,859.65
  6. Step 6: Final answer
    x = 22,317.33

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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.