Home / 12,408.81-18,616.68-5,018.45

Finding the Fourth Proportional to 12,408.81, 18,616.68 and 5,018.45

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Solution

The fourth proportional to 12,408.81, 18,616.68 and 5,018.45 is: 7,529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.81 : 18,616.68 = 5,018.45 : x
  2. Step 2: Convert to fraction form
    12,408.81/18,616.68 = 5,018.45/x
  3. Step 3: Cross multiply
    12,408.81x = 18,616.68 × 5,018.45
  4. Step 4: Simplify right side
    12,408.81x = 93,426,877.75
  5. Step 5: Solve for x
    x = 93,426,877.75/12,408.81
  6. Step 6: Final answer
    x = 7,529.08

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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.