Home / 12,420.55-18,633.12-4,101.14

Finding the Fourth Proportional to 12,420.55, 18,633.12 and 4,101.14

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Solution

The fourth proportional to 12,420.55, 18,633.12 and 4,101.14 is: 6,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.55 : 18,633.12 = 4,101.14 : x
  2. Step 2: Convert to fraction form
    12,420.55/18,633.12 = 4,101.14/x
  3. Step 3: Cross multiply
    12,420.55x = 18,633.12 × 4,101.14
  4. Step 4: Simplify right side
    12,420.55x = 76,417,033.76
  5. Step 5: Solve for x
    x = 76,417,033.76/12,420.55
  6. Step 6: Final answer
    x = 6,152.47

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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.