Home / 10,856.21-14,979.12-6,609.48

Finding the Fourth Proportional to 10,856.21, 14,979.12 and 6,609.48

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Solution

The fourth proportional to 10,856.21, 14,979.12 and 6,609.48 is: 9,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.21 : 14,979.12 = 6,609.48 : x
  2. Step 2: Convert to fraction form
    10,856.21/14,979.12 = 6,609.48/x
  3. Step 3: Cross multiply
    10,856.21x = 14,979.12 × 6,609.48
  4. Step 4: Simplify right side
    10,856.21x = 99,004,194.06
  5. Step 5: Solve for x
    x = 99,004,194.06/10,856.21
  6. Step 6: Final answer
    x = 9,119.60

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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.