Home / 11,707.20-16,154.64-6,991.20

Finding the Fourth Proportional to 11,707.20, 16,154.64 and 6,991.20

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Solution

The fourth proportional to 11,707.20, 16,154.64 and 6,991.20 is: 9,647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,707.20 : 16,154.64 = 6,991.20 : x
  2. Step 2: Convert to fraction form
    11,707.20/16,154.64 = 6,991.20/x
  3. Step 3: Cross multiply
    11,707.20x = 16,154.64 × 6,991.20
  4. Step 4: Simplify right side
    11,707.20x = 112,940,319.17
  5. Step 5: Solve for x
    x = 112,940,319.17/11,707.20
  6. Step 6: Final answer
    x = 9,647.08

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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.