Home / 28,401.12-39,187.26-18,963

Finding the Fourth Proportional to 28,401.12, 39,187.26 and 18,963

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Solution

The fourth proportional to 28,401.12, 39,187.26 and 18,963 is: 26,164.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.12 : 39,187.26 = 18,963 : x
  2. Step 2: Convert to fraction form
    28,401.12/39,187.26 = 18,963/x
  3. Step 3: Cross multiply
    28,401.12x = 39,187.26 × 18,963
  4. Step 4: Simplify right side
    28,401.12x = 743,108,011.38
  5. Step 5: Solve for x
    x = 743,108,011.38/28,401.12
  6. Step 6: Final answer
    x = 26,164.74

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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.