Home / 21,114.16-31,536.38-19,109.80

Finding the Fourth Proportional to 21,114.16, 31,536.38 and 19,109.80

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Solution

The fourth proportional to 21,114.16, 31,536.38 and 19,109.80 is: 28,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.16 : 31,536.38 = 19,109.80 : x
  2. Step 2: Convert to fraction form
    21,114.16/31,536.38 = 19,109.80/x
  3. Step 3: Cross multiply
    21,114.16x = 31,536.38 × 19,109.80
  4. Step 4: Simplify right side
    21,114.16x = 602,653,914.52
  5. Step 5: Solve for x
    x = 602,653,914.52/21,114.16
  6. Step 6: Final answer
    x = 28,542.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.