Home / 13,141.17-18,137.18-7,836.35

Finding the Fourth Proportional to 13,141.17, 18,137.18 and 7,836.35

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Solution

The fourth proportional to 13,141.17, 18,137.18 and 7,836.35 is: 10,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.17 : 18,137.18 = 7,836.35 : x
  2. Step 2: Convert to fraction form
    13,141.17/18,137.18 = 7,836.35/x
  3. Step 3: Cross multiply
    13,141.17x = 18,137.18 × 7,836.35
  4. Step 4: Simplify right side
    13,141.17x = 142,129,219.40
  5. Step 5: Solve for x
    x = 142,129,219.40/13,141.17
  6. Step 6: Final answer
    x = 10,815.57

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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.