Home / 21,767.46-30,034.98-20,660.19

Finding the Fourth Proportional to 21,767.46, 30,034.98 and 20,660.19

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Solution

The fourth proportional to 21,767.46, 30,034.98 and 20,660.19 is: 28,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.46 : 30,034.98 = 20,660.19 : x
  2. Step 2: Convert to fraction form
    21,767.46/30,034.98 = 20,660.19/x
  3. Step 3: Cross multiply
    21,767.46x = 30,034.98 × 20,660.19
  4. Step 4: Simplify right side
    21,767.46x = 620,528,393.45
  5. Step 5: Solve for x
    x = 620,528,393.45/21,767.46
  6. Step 6: Final answer
    x = 28,507.16

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Half scale
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Double scale
Find fourth proportional to 21,768.46, 30,036.36 and 20,661.19
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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.