Home / 20,107.40-27,782.73-19,397.84

Finding the Fourth Proportional to 20,107.40, 27,782.73 and 19,397.84

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Solution

The fourth proportional to 20,107.40, 27,782.73 and 19,397.84 is: 26,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.40 : 27,782.73 = 19,397.84 : x
  2. Step 2: Convert to fraction form
    20,107.40/27,782.73 = 19,397.84/x
  3. Step 3: Cross multiply
    20,107.40x = 27,782.73 × 19,397.84
  4. Step 4: Simplify right side
    20,107.40x = 538,924,812.39
  5. Step 5: Solve for x
    x = 538,924,812.39/20,107.40
  6. Step 6: Final answer
    x = 26,802.32

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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.