Home / 13,905.48-19,189.31-7,617.81

Finding the Fourth Proportional to 13,905.48, 19,189.31 and 7,617.81

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Solution

The fourth proportional to 13,905.48, 19,189.31 and 7,617.81 is: 10,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.48 : 19,189.31 = 7,617.81 : x
  2. Step 2: Convert to fraction form
    13,905.48/19,189.31 = 7,617.81/x
  3. Step 3: Cross multiply
    13,905.48x = 19,189.31 × 7,617.81
  4. Step 4: Simplify right side
    13,905.48x = 146,180,479.52
  5. Step 5: Solve for x
    x = 146,180,479.52/13,905.48
  6. Step 6: Final answer
    x = 10,512.44

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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.