Home / 12,140.04-18,206.19-4,742.70

Finding the Fourth Proportional to 12,140.04, 18,206.19 and 4,742.70

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Solution

The fourth proportional to 12,140.04, 18,206.19 and 4,742.70 is: 7,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.04 : 18,206.19 = 4,742.70 : x
  2. Step 2: Convert to fraction form
    12,140.04/18,206.19 = 4,742.70/x
  3. Step 3: Cross multiply
    12,140.04x = 18,206.19 × 4,742.70
  4. Step 4: Simplify right side
    12,140.04x = 86,346,497.31
  5. Step 5: Solve for x
    x = 86,346,497.31/12,140.04
  6. Step 6: Final answer
    x = 7,112.54

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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.