Home / 13,151.34-18,148.95-7,182.90

Finding the Fourth Proportional to 13,151.34, 18,148.95 and 7,182.90

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Solution

The fourth proportional to 13,151.34, 18,148.95 and 7,182.90 is: 9,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.34 : 18,148.95 = 7,182.90 : x
  2. Step 2: Convert to fraction form
    13,151.34/18,148.95 = 7,182.90/x
  3. Step 3: Cross multiply
    13,151.34x = 18,148.95 × 7,182.90
  4. Step 4: Simplify right side
    13,151.34x = 130,362,092.96
  5. Step 5: Solve for x
    x = 130,362,092.96/13,151.34
  6. Step 6: Final answer
    x = 9,912.46

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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.