Home / 11,289.30-15,581.16-6,813.42

Finding the Fourth Proportional to 11,289.30, 15,581.16 and 6,813.42

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Solution

The fourth proportional to 11,289.30, 15,581.16 and 6,813.42 is: 9,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.30 : 15,581.16 = 6,813.42 : x
  2. Step 2: Convert to fraction form
    11,289.30/15,581.16 = 6,813.42/x
  3. Step 3: Cross multiply
    11,289.30x = 15,581.16 × 6,813.42
  4. Step 4: Simplify right side
    11,289.30x = 106,160,987.17
  5. Step 5: Solve for x
    x = 106,160,987.17/11,289.30
  6. Step 6: Final answer
    x = 9,403.68

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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.