Home / 12,656.94-18,987.45-4,760.07

Finding the Fourth Proportional to 12,656.94, 18,987.45 and 4,760.07

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Solution

The fourth proportional to 12,656.94, 18,987.45 and 4,760.07 is: 7,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.94 : 18,987.45 = 4,760.07 : x
  2. Step 2: Convert to fraction form
    12,656.94/18,987.45 = 4,760.07/x
  3. Step 3: Cross multiply
    12,656.94x = 18,987.45 × 4,760.07
  4. Step 4: Simplify right side
    12,656.94x = 90,381,591.12
  5. Step 5: Solve for x
    x = 90,381,591.12/12,656.94
  6. Step 6: Final answer
    x = 7,140.87

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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.