Home / 20,020.16-27,602.16-13,721.60

Finding the Fourth Proportional to 20,020.16, 27,602.16 and 13,721.60

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Solution

The fourth proportional to 20,020.16, 27,602.16 and 13,721.60 is: 18,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.16 : 27,602.16 = 13,721.60 : x
  2. Step 2: Convert to fraction form
    20,020.16/27,602.16 = 13,721.60/x
  3. Step 3: Cross multiply
    20,020.16x = 27,602.16 × 13,721.60
  4. Step 4: Simplify right side
    20,020.16x = 378,745,798.66
  5. Step 5: Solve for x
    x = 378,745,798.66/20,020.16
  6. Step 6: Final answer
    x = 18,918.22

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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.