Home / 13,918.17-19,208.28-7,631.76

Finding the Fourth Proportional to 13,918.17, 19,208.28 and 7,631.76

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Solution

The fourth proportional to 13,918.17, 19,208.28 and 7,631.76 is: 10,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.17 : 19,208.28 = 7,631.76 : x
  2. Step 2: Convert to fraction form
    13,918.17/19,208.28 = 7,631.76/x
  3. Step 3: Cross multiply
    13,918.17x = 19,208.28 × 7,631.76
  4. Step 4: Simplify right side
    13,918.17x = 146,592,982.97
  5. Step 5: Solve for x
    x = 146,592,982.97/13,918.17
  6. Step 6: Final answer
    x = 10,532.49

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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.