Home / 13,699.53-18,905.40-7,411.91

Finding the Fourth Proportional to 13,699.53, 18,905.40 and 7,411.91

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Solution

The fourth proportional to 13,699.53, 18,905.40 and 7,411.91 is: 10,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.53 : 18,905.40 = 7,411.91 : x
  2. Step 2: Convert to fraction form
    13,699.53/18,905.40 = 7,411.91/x
  3. Step 3: Cross multiply
    13,699.53x = 18,905.40 × 7,411.91
  4. Step 4: Simplify right side
    13,699.53x = 140,125,028.79
  5. Step 5: Solve for x
    x = 140,125,028.79/13,699.53
  6. Step 6: Final answer
    x = 10,228.46

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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.