Home / 12,215.16-16,856.64-6,910.02

Finding the Fourth Proportional to 12,215.16, 16,856.64 and 6,910.02

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Solution

The fourth proportional to 12,215.16, 16,856.64 and 6,910.02 is: 9,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.16 : 16,856.64 = 6,910.02 : x
  2. Step 2: Convert to fraction form
    12,215.16/16,856.64 = 6,910.02/x
  3. Step 3: Cross multiply
    12,215.16x = 16,856.64 × 6,910.02
  4. Step 4: Simplify right side
    12,215.16x = 116,479,719.53
  5. Step 5: Solve for x
    x = 116,479,719.53/12,215.16
  6. Step 6: Final answer
    x = 9,535.67

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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.