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Finding the Fourth Proportional to 11,165.80, 15,408.97 and 6,130.49

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Solution

The fourth proportional to 11,165.80, 15,408.97 and 6,130.49 is: 8,460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.80 : 15,408.97 = 6,130.49 : x
  2. Step 2: Convert to fraction form
    11,165.80/15,408.97 = 6,130.49/x
  3. Step 3: Cross multiply
    11,165.80x = 15,408.97 × 6,130.49
  4. Step 4: Simplify right side
    11,165.80x = 94,464,444.12
  5. Step 5: Solve for x
    x = 94,464,444.12/11,165.80
  6. Step 6: Final answer
    x = 8,460.16

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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.