Home / 15,346.21-21,178.39-8,631.82

Finding the Fourth Proportional to 15,346.21, 21,178.39 and 8,631.82

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Solution

The fourth proportional to 15,346.21, 21,178.39 and 8,631.82 is: 11,912.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.21 : 21,178.39 = 8,631.82 : x
  2. Step 2: Convert to fraction form
    15,346.21/21,178.39 = 8,631.82/x
  3. Step 3: Cross multiply
    15,346.21x = 21,178.39 × 8,631.82
  4. Step 4: Simplify right side
    15,346.21x = 182,808,050.37
  5. Step 5: Solve for x
    x = 182,808,050.37/15,346.21
  6. Step 6: Final answer
    x = 11,912.26

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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.