Home / 13,122.31-18,108.08-7,533.31

Finding the Fourth Proportional to 13,122.31, 18,108.08 and 7,533.31

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Solution

The fourth proportional to 13,122.31, 18,108.08 and 7,533.31 is: 10,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.31 : 18,108.08 = 7,533.31 : x
  2. Step 2: Convert to fraction form
    13,122.31/18,108.08 = 7,533.31/x
  3. Step 3: Cross multiply
    13,122.31x = 18,108.08 × 7,533.31
  4. Step 4: Simplify right side
    13,122.31x = 136,413,742.48
  5. Step 5: Solve for x
    x = 136,413,742.48/13,122.31
  6. Step 6: Final answer
    x = 10,395.56

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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.