Home / 13,087.83-18,059.84-7,420.76

Finding the Fourth Proportional to 13,087.83, 18,059.84 and 7,420.76

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Solution

The fourth proportional to 13,087.83, 18,059.84 and 7,420.76 is: 10,239.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.83 : 18,059.84 = 7,420.76 : x
  2. Step 2: Convert to fraction form
    13,087.83/18,059.84 = 7,420.76/x
  3. Step 3: Cross multiply
    13,087.83x = 18,059.84 × 7,420.76
  4. Step 4: Simplify right side
    13,087.83x = 134,017,787.14
  5. Step 5: Solve for x
    x = 134,017,787.14/13,087.83
  6. Step 6: Final answer
    x = 10,239.88

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Half scale
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Double scale
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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.