Home / 18,348.60-25,328.81-12,388.35

Finding the Fourth Proportional to 18,348.60, 25,328.81 and 12,388.35

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Solution

The fourth proportional to 18,348.60, 25,328.81 and 12,388.35 is: 17,101.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.60 : 25,328.81 = 12,388.35 : x
  2. Step 2: Convert to fraction form
    18,348.60/25,328.81 = 12,388.35/x
  3. Step 3: Cross multiply
    18,348.60x = 25,328.81 × 12,388.35
  4. Step 4: Simplify right side
    18,348.60x = 313,782,099.35
  5. Step 5: Solve for x
    x = 313,782,099.35/18,348.60
  6. Step 6: Final answer
    x = 17,101.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.