Home / 12,609.40-18,911.06-5,585.53

Finding the Fourth Proportional to 12,609.40, 18,911.06 and 5,585.53

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Solution

The fourth proportional to 12,609.40, 18,911.06 and 5,585.53 is: 8,376.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.40 : 18,911.06 = 5,585.53 : x
  2. Step 2: Convert to fraction form
    12,609.40/18,911.06 = 5,585.53/x
  3. Step 3: Cross multiply
    12,609.40x = 18,911.06 × 5,585.53
  4. Step 4: Simplify right side
    12,609.40x = 105,628,170.48
  5. Step 5: Solve for x
    x = 105,628,170.48/12,609.40
  6. Step 6: Final answer
    x = 8,376.94

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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.