Home / 12,420.80-18,633.04-4,101.69

Finding the Fourth Proportional to 12,420.80, 18,633.04 and 4,101.69

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Solution

The fourth proportional to 12,420.80, 18,633.04 and 4,101.69 is: 6,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.80 : 18,633.04 = 4,101.69 : x
  2. Step 2: Convert to fraction form
    12,420.80/18,633.04 = 4,101.69/x
  3. Step 3: Cross multiply
    12,420.80x = 18,633.04 × 4,101.69
  4. Step 4: Simplify right side
    12,420.80x = 76,426,953.84
  5. Step 5: Solve for x
    x = 76,426,953.84/12,420.80
  6. Step 6: Final answer
    x = 6,153.15

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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.