Home / 15,176.11-20,968.77-10,918.75

Finding the Fourth Proportional to 15,176.11, 20,968.77 and 10,918.75

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Solution

The fourth proportional to 15,176.11, 20,968.77 and 10,918.75 is: 15,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.11 : 20,968.77 = 10,918.75 : x
  2. Step 2: Convert to fraction form
    15,176.11/20,968.77 = 10,918.75/x
  3. Step 3: Cross multiply
    15,176.11x = 20,968.77 × 10,918.75
  4. Step 4: Simplify right side
    15,176.11x = 228,952,785.28
  5. Step 5: Solve for x
    x = 228,952,785.28/15,176.11
  6. Step 6: Final answer
    x = 15,086.40

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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.