Home / 11,889.28-16,407.12-7,176.16

Finding the Fourth Proportional to 11,889.28, 16,407.12 and 7,176.16

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Solution

The fourth proportional to 11,889.28, 16,407.12 and 7,176.16 is: 9,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.28 : 16,407.12 = 7,176.16 : x
  2. Step 2: Convert to fraction form
    11,889.28/16,407.12 = 7,176.16/x
  3. Step 3: Cross multiply
    11,889.28x = 16,407.12 × 7,176.16
  4. Step 4: Simplify right side
    11,889.28x = 117,740,118.26
  5. Step 5: Solve for x
    x = 117,740,118.26/11,889.28
  6. Step 6: Final answer
    x = 9,903.05

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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.