Home / 18,919.12-26,108.42-10,962.88

Finding the Fourth Proportional to 18,919.12, 26,108.42 and 10,962.88

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Solution

The fourth proportional to 18,919.12, 26,108.42 and 10,962.88 is: 15,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.12 : 26,108.42 = 10,962.88 : x
  2. Step 2: Convert to fraction form
    18,919.12/26,108.42 = 10,962.88/x
  3. Step 3: Cross multiply
    18,919.12x = 26,108.42 × 10,962.88
  4. Step 4: Simplify right side
    18,919.12x = 286,223,475.45
  5. Step 5: Solve for x
    x = 286,223,475.45/18,919.12
  6. Step 6: Final answer
    x = 15,128.79

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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.