Home / 18,855.12-26,021.20-10,899.28

Finding the Fourth Proportional to 18,855.12, 26,021.20 and 10,899.28

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Solution

The fourth proportional to 18,855.12, 26,021.20 and 10,899.28 is: 15,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.12 : 26,021.20 = 10,899.28 : x
  2. Step 2: Convert to fraction form
    18,855.12/26,021.20 = 10,899.28/x
  3. Step 3: Cross multiply
    18,855.12x = 26,021.20 × 10,899.28
  4. Step 4: Simplify right side
    18,855.12x = 283,612,344.74
  5. Step 5: Solve for x
    x = 283,612,344.74/18,855.12
  6. Step 6: Final answer
    x = 15,041.66

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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.