Home / 13,903.36-19,190.66-7,938.28

Finding the Fourth Proportional to 13,903.36, 19,190.66 and 7,938.28

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Solution

The fourth proportional to 13,903.36, 19,190.66 and 7,938.28 is: 10,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.36 : 19,190.66 = 7,938.28 : x
  2. Step 2: Convert to fraction form
    13,903.36/19,190.66 = 7,938.28/x
  3. Step 3: Cross multiply
    13,903.36x = 19,190.66 × 7,938.28
  4. Step 4: Simplify right side
    13,903.36x = 152,340,832.46
  5. Step 5: Solve for x
    x = 152,340,832.46/13,903.36
  6. Step 6: Final answer
    x = 10,957.12

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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.