Home / 15,245.82-21,041.07-9,278.35

Finding the Fourth Proportional to 15,245.82, 21,041.07 and 9,278.35

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Solution

The fourth proportional to 15,245.82, 21,041.07 and 9,278.35 is: 12,805.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.82 : 21,041.07 = 9,278.35 : x
  2. Step 2: Convert to fraction form
    15,245.82/21,041.07 = 9,278.35/x
  3. Step 3: Cross multiply
    15,245.82x = 21,041.07 × 9,278.35
  4. Step 4: Simplify right side
    15,245.82x = 195,226,324.44
  5. Step 5: Solve for x
    x = 195,226,324.44/15,245.82
  6. Step 6: Final answer
    x = 12,805.24

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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.