Home / 13,889.54-19,160.40-9,411.76

Finding the Fourth Proportional to 13,889.54, 19,160.40 and 9,411.76

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Solution

The fourth proportional to 13,889.54, 19,160.40 and 9,411.76 is: 12,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.54 : 19,160.40 = 9,411.76 : x
  2. Step 2: Convert to fraction form
    13,889.54/19,160.40 = 9,411.76/x
  3. Step 3: Cross multiply
    13,889.54x = 19,160.40 × 9,411.76
  4. Step 4: Simplify right side
    13,889.54x = 180,333,086.30
  5. Step 5: Solve for x
    x = 180,333,086.30/13,889.54
  6. Step 6: Final answer
    x = 12,983.37

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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.