Home / 12,308.04-18,478.40-5,738.81

Finding the Fourth Proportional to 12,308.04, 18,478.40 and 5,738.81

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Solution

The fourth proportional to 12,308.04, 18,478.40 and 5,738.81 is: 8,615.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308.04 : 18,478.40 = 5,738.81 : x
  2. Step 2: Convert to fraction form
    12,308.04/18,478.40 = 5,738.81/x
  3. Step 3: Cross multiply
    12,308.04x = 18,478.40 × 5,738.81
  4. Step 4: Simplify right side
    12,308.04x = 106,043,905.62
  5. Step 5: Solve for x
    x = 106,043,905.62/12,308.04
  6. Step 6: Final answer
    x = 8,615.82

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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.