Home / 15,661.77-21,480.92-14,814.51

Finding the Fourth Proportional to 15,661.77, 21,480.92 and 14,814.51

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Solution

The fourth proportional to 15,661.77, 21,480.92 and 14,814.51 is: 20,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.77 : 21,480.92 = 14,814.51 : x
  2. Step 2: Convert to fraction form
    15,661.77/21,480.92 = 14,814.51/x
  3. Step 3: Cross multiply
    15,661.77x = 21,480.92 × 14,814.51
  4. Step 4: Simplify right side
    15,661.77x = 318,229,304.15
  5. Step 5: Solve for x
    x = 318,229,304.15/15,661.77
  6. Step 6: Final answer
    x = 20,318.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.