Home / 15,214.85-20,995.43-8,408.57

Finding the Fourth Proportional to 15,214.85, 20,995.43 and 8,408.57

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Solution

The fourth proportional to 15,214.85, 20,995.43 and 8,408.57 is: 11,603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,214.85 : 20,995.43 = 8,408.57 : x
  2. Step 2: Convert to fraction form
    15,214.85/20,995.43 = 8,408.57/x
  3. Step 3: Cross multiply
    15,214.85x = 20,995.43 × 8,408.57
  4. Step 4: Simplify right side
    15,214.85x = 176,541,395.82
  5. Step 5: Solve for x
    x = 176,541,395.82/15,214.85
  6. Step 6: Final answer
    x = 11,603.23

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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.