Home / 11,890.72-16,409.16-6,854.92

Finding the Fourth Proportional to 11,890.72, 16,409.16 and 6,854.92

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Solution

The fourth proportional to 11,890.72, 16,409.16 and 6,854.92 is: 9,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.72 : 16,409.16 = 6,854.92 : x
  2. Step 2: Convert to fraction form
    11,890.72/16,409.16 = 6,854.92/x
  3. Step 3: Cross multiply
    11,890.72x = 16,409.16 × 6,854.92
  4. Step 4: Simplify right side
    11,890.72x = 112,483,438.04
  5. Step 5: Solve for x
    x = 112,483,438.04/11,890.72
  6. Step 6: Final answer
    x = 9,459.77

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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.