Home / 13,113.52-18,096.36-7,145.28

Finding the Fourth Proportional to 13,113.52, 18,096.36 and 7,145.28

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Solution

The fourth proportional to 13,113.52, 18,096.36 and 7,145.28 is: 9,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.52 : 18,096.36 = 7,145.28 : x
  2. Step 2: Convert to fraction form
    13,113.52/18,096.36 = 7,145.28/x
  3. Step 3: Cross multiply
    13,113.52x = 18,096.36 × 7,145.28
  4. Step 4: Simplify right side
    13,113.52x = 129,303,559.18
  5. Step 5: Solve for x
    x = 129,303,559.18/13,113.52
  6. Step 6: Final answer
    x = 9,860.32

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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.