Home / 10,253.40-15,408.90-8,986.20

Finding the Fourth Proportional to 10,253.40, 15,408.90 and 8,986.20

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Solution

The fourth proportional to 10,253.40, 15,408.90 and 8,986.20 is: 13,504.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,253.40 : 15,408.90 = 8,986.20 : x
  2. Step 2: Convert to fraction form
    10,253.40/15,408.90 = 8,986.20/x
  3. Step 3: Cross multiply
    10,253.40x = 15,408.90 × 8,986.20
  4. Step 4: Simplify right side
    10,253.40x = 138,467,457.18
  5. Step 5: Solve for x
    x = 138,467,457.18/10,253.40
  6. Step 6: Final answer
    x = 13,504.54

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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.