Home / 12,156.36-18,242.74-4,759.89

Finding the Fourth Proportional to 12,156.36, 18,242.74 and 4,759.89

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Solution

The fourth proportional to 12,156.36, 18,242.74 and 4,759.89 is: 7,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.36 : 18,242.74 = 4,759.89 : x
  2. Step 2: Convert to fraction form
    12,156.36/18,242.74 = 4,759.89/x
  3. Step 3: Cross multiply
    12,156.36x = 18,242.74 × 4,759.89
  4. Step 4: Simplify right side
    12,156.36x = 86,833,494.81
  5. Step 5: Solve for x
    x = 86,833,494.81/12,156.36
  6. Step 6: Final answer
    x = 7,143.05

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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.