Home / 28,433.80-42,632.45-11,805.31

Finding the Fourth Proportional to 28,433.80, 42,632.45 and 11,805.31

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Solution

The fourth proportional to 28,433.80, 42,632.45 and 11,805.31 is: 17,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.80 : 42,632.45 = 11,805.31 : x
  2. Step 2: Convert to fraction form
    28,433.80/42,632.45 = 11,805.31/x
  3. Step 3: Cross multiply
    28,433.80x = 42,632.45 × 11,805.31
  4. Step 4: Simplify right side
    28,433.80x = 503,289,016.12
  5. Step 5: Solve for x
    x = 503,289,016.12/28,433.80
  6. Step 6: Final answer
    x = 17,700.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.