Home / 12,480.76-18,713.40-4,158.62

Finding the Fourth Proportional to 12,480.76, 18,713.40 and 4,158.62

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Solution

The fourth proportional to 12,480.76, 18,713.40 and 4,158.62 is: 6,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.76 : 18,713.40 = 4,158.62 : x
  2. Step 2: Convert to fraction form
    12,480.76/18,713.40 = 4,158.62/x
  3. Step 3: Cross multiply
    12,480.76x = 18,713.40 × 4,158.62
  4. Step 4: Simplify right side
    12,480.76x = 77,821,919.51
  5. Step 5: Solve for x
    x = 77,821,919.51/12,480.76
  6. Step 6: Final answer
    x = 6,235.35

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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.