Home / 21,785.14-30,072.65-14,721.13

Finding the Fourth Proportional to 21,785.14, 30,072.65 and 14,721.13

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Solution

The fourth proportional to 21,785.14, 30,072.65 and 14,721.13 is: 20,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.14 : 30,072.65 = 14,721.13 : x
  2. Step 2: Convert to fraction form
    21,785.14/30,072.65 = 14,721.13/x
  3. Step 3: Cross multiply
    21,785.14x = 30,072.65 × 14,721.13
  4. Step 4: Simplify right side
    21,785.14x = 442,703,390.09
  5. Step 5: Solve for x
    x = 442,703,390.09/21,785.14
  6. Step 6: Final answer
    x = 20,321.35

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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.