Home / 12,585.80-18,846.30-9,972.20

Finding the Fourth Proportional to 12,585.80, 18,846.30 and 9,972.20

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Solution

The fourth proportional to 12,585.80, 18,846.30 and 9,972.20 is: 14,932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.80 : 18,846.30 = 9,972.20 : x
  2. Step 2: Convert to fraction form
    12,585.80/18,846.30 = 9,972.20/x
  3. Step 3: Cross multiply
    12,585.80x = 18,846.30 × 9,972.20
  4. Step 4: Simplify right side
    12,585.80x = 187,939,072.86
  5. Step 5: Solve for x
    x = 187,939,072.86/12,585.80
  6. Step 6: Final answer
    x = 14,932.63

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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.