Home / 12,390.55-18,587.77-4,068.68

Finding the Fourth Proportional to 12,390.55, 18,587.77 and 4,068.68

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Solution

The fourth proportional to 12,390.55, 18,587.77 and 4,068.68 is: 6,103.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.55 : 18,587.77 = 4,068.68 : x
  2. Step 2: Convert to fraction form
    12,390.55/18,587.77 = 4,068.68/x
  3. Step 3: Cross multiply
    12,390.55x = 18,587.77 × 4,068.68
  4. Step 4: Simplify right side
    12,390.55x = 75,627,595.10
  5. Step 5: Solve for x
    x = 75,627,595.10/12,390.55
  6. Step 6: Final answer
    x = 6,103.65

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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.