Home / 15,393.24-21,237.84-9,418.68

Finding the Fourth Proportional to 15,393.24, 21,237.84 and 9,418.68

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Solution

The fourth proportional to 15,393.24, 21,237.84 and 9,418.68 is: 12,994.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.24 : 21,237.84 = 9,418.68 : x
  2. Step 2: Convert to fraction form
    15,393.24/21,237.84 = 9,418.68/x
  3. Step 3: Cross multiply
    15,393.24x = 21,237.84 × 9,418.68
  4. Step 4: Simplify right side
    15,393.24x = 200,032,418.85
  5. Step 5: Solve for x
    x = 200,032,418.85/15,393.24
  6. Step 6: Final answer
    x = 12,994.82

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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.