Home / 10,100.48-15,118.40-5,408.80

Finding the Fourth Proportional to 10,100.48, 15,118.40 and 5,408.80

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Solution

The fourth proportional to 10,100.48, 15,118.40 and 5,408.80 is: 8,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,100.48 : 15,118.40 = 5,408.80 : x
  2. Step 2: Convert to fraction form
    10,100.48/15,118.40 = 5,408.80/x
  3. Step 3: Cross multiply
    10,100.48x = 15,118.40 × 5,408.80
  4. Step 4: Simplify right side
    10,100.48x = 81,772,401.92
  5. Step 5: Solve for x
    x = 81,772,401.92/10,100.48
  6. Step 6: Final answer
    x = 8,095.89

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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.