Home / 13,133.31-18,123.74-7,164.97

Finding the Fourth Proportional to 13,133.31, 18,123.74 and 7,164.97

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Solution

The fourth proportional to 13,133.31, 18,123.74 and 7,164.97 is: 9,887.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.31 : 18,123.74 = 7,164.97 : x
  2. Step 2: Convert to fraction form
    13,133.31/18,123.74 = 7,164.97/x
  3. Step 3: Cross multiply
    13,133.31x = 18,123.74 × 7,164.97
  4. Step 4: Simplify right side
    13,133.31x = 129,856,014.53
  5. Step 5: Solve for x
    x = 129,856,014.53/13,133.31
  6. Step 6: Final answer
    x = 9,887.53

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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.