Home / 18,408.81-25,419.14-15,006.35

Finding the Fourth Proportional to 18,408.81, 25,419.14 and 15,006.35

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Solution

The fourth proportional to 18,408.81, 25,419.14 and 15,006.35 is: 20,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.81 : 25,419.14 = 15,006.35 : x
  2. Step 2: Convert to fraction form
    18,408.81/25,419.14 = 15,006.35/x
  3. Step 3: Cross multiply
    18,408.81x = 25,419.14 × 15,006.35
  4. Step 4: Simplify right side
    18,408.81x = 381,448,612.60
  5. Step 5: Solve for x
    x = 381,448,612.60/18,408.81
  6. Step 6: Final answer
    x = 20,720.98

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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.