Home / 13,859.55-19,127.58-7,892.40

Finding the Fourth Proportional to 13,859.55, 19,127.58 and 7,892.40

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Solution

The fourth proportional to 13,859.55, 19,127.58 and 7,892.40 is: 10,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.55 : 19,127.58 = 7,892.40 : x
  2. Step 2: Convert to fraction form
    13,859.55/19,127.58 = 7,892.40/x
  3. Step 3: Cross multiply
    13,859.55x = 19,127.58 × 7,892.40
  4. Step 4: Simplify right side
    13,859.55x = 150,962,512.39
  5. Step 5: Solve for x
    x = 150,962,512.39/13,859.55
  6. Step 6: Final answer
    x = 10,892.31

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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.