Home / 12,159.72-18,225-4,759.56

Finding the Fourth Proportional to 12,159.72, 18,225 and 4,759.56

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Solution

The fourth proportional to 12,159.72, 18,225 and 4,759.56 is: 7,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.72 : 18,225 = 4,759.56 : x
  2. Step 2: Convert to fraction form
    12,159.72/18,225 = 4,759.56/x
  3. Step 3: Cross multiply
    12,159.72x = 18,225 × 4,759.56
  4. Step 4: Simplify right side
    12,159.72x = 86,742,981
  5. Step 5: Solve for x
    x = 86,742,981/12,159.72
  6. Step 6: Final answer
    x = 7,133.63

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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.