Home / 13,133.18-18,123.59-7,164.84

Finding the Fourth Proportional to 13,133.18, 18,123.59 and 7,164.84

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Solution

The fourth proportional to 13,133.18, 18,123.59 and 7,164.84 is: 9,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.18 : 18,123.59 = 7,164.84 : x
  2. Step 2: Convert to fraction form
    13,133.18/18,123.59 = 7,164.84/x
  3. Step 3: Cross multiply
    13,133.18x = 18,123.59 × 7,164.84
  4. Step 4: Simplify right side
    13,133.18x = 129,852,586.75
  5. Step 5: Solve for x
    x = 129,852,586.75/13,133.18
  6. Step 6: Final answer
    x = 9,887.37

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Half scale
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Double scale
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Similar ratio
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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.