Home / 12,087.88-18,118.70-4,690.16

Finding the Fourth Proportional to 12,087.88, 18,118.70 and 4,690.16

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Solution

The fourth proportional to 12,087.88, 18,118.70 and 4,690.16 is: 7,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.88 : 18,118.70 = 4,690.16 : x
  2. Step 2: Convert to fraction form
    12,087.88/18,118.70 = 4,690.16/x
  3. Step 3: Cross multiply
    12,087.88x = 18,118.70 × 4,690.16
  4. Step 4: Simplify right side
    12,087.88x = 84,979,601.99
  5. Step 5: Solve for x
    x = 84,979,601.99/12,087.88
  6. Step 6: Final answer
    x = 7,030.15

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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.