Home / 27,906.08-38,511.12-15,331.16

Finding the Fourth Proportional to 27,906.08, 38,511.12 and 15,331.16

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Solution

The fourth proportional to 27,906.08, 38,511.12 and 15,331.16 is: 21,157.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.08 : 38,511.12 = 15,331.16 : x
  2. Step 2: Convert to fraction form
    27,906.08/38,511.12 = 15,331.16/x
  3. Step 3: Cross multiply
    27,906.08x = 38,511.12 × 15,331.16
  4. Step 4: Simplify right side
    27,906.08x = 590,420,142.50
  5. Step 5: Solve for x
    x = 590,420,142.50/27,906.08
  6. Step 6: Final answer
    x = 21,157.40

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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.