Home / 13,215.16-18,236.82-7,246.87

Finding the Fourth Proportional to 13,215.16, 18,236.82 and 7,246.87

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Solution

The fourth proportional to 13,215.16, 18,236.82 and 7,246.87 is: 10,000.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.16 : 18,236.82 = 7,246.87 : x
  2. Step 2: Convert to fraction form
    13,215.16/18,236.82 = 7,246.87/x
  3. Step 3: Cross multiply
    13,215.16x = 18,236.82 × 7,246.87
  4. Step 4: Simplify right side
    13,215.16x = 132,159,863.75
  5. Step 5: Solve for x
    x = 132,159,863.75/13,215.16
  6. Step 6: Final answer
    x = 10,000.63

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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.