Home / 13,133.24-18,123.51-7,164.90

Finding the Fourth Proportional to 13,133.24, 18,123.51 and 7,164.90

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Solution

The fourth proportional to 13,133.24, 18,123.51 and 7,164.90 is: 9,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.24 : 18,123.51 = 7,164.90 : x
  2. Step 2: Convert to fraction form
    13,133.24/18,123.51 = 7,164.90/x
  3. Step 3: Cross multiply
    13,133.24x = 18,123.51 × 7,164.90
  4. Step 4: Simplify right side
    13,133.24x = 129,853,136.80
  5. Step 5: Solve for x
    x = 129,853,136.80/13,133.24
  6. Step 6: Final answer
    x = 9,887.37

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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.