Home / 12,159.36-18,247.25-4,762.89

Finding the Fourth Proportional to 12,159.36, 18,247.25 and 4,762.89

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Solution

The fourth proportional to 12,159.36, 18,247.25 and 4,762.89 is: 7,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.36 : 18,247.25 = 4,762.89 : x
  2. Step 2: Convert to fraction form
    12,159.36/18,247.25 = 4,762.89/x
  3. Step 3: Cross multiply
    12,159.36x = 18,247.25 × 4,762.89
  4. Step 4: Simplify right side
    12,159.36x = 86,909,620.74
  5. Step 5: Solve for x
    x = 86,909,620.74/12,159.36
  6. Step 6: Final answer
    x = 7,147.55

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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.