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Finding the Fourth Proportional to 15,605.60, 23,408.40 and 7,813.40

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Solution

The fourth proportional to 15,605.60, 23,408.40 and 7,813.40 is: 11,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.60 : 23,408.40 = 7,813.40 : x
  2. Step 2: Convert to fraction form
    15,605.60/23,408.40 = 7,813.40/x
  3. Step 3: Cross multiply
    15,605.60x = 23,408.40 × 7,813.40
  4. Step 4: Simplify right side
    15,605.60x = 182,899,192.56
  5. Step 5: Solve for x
    x = 182,899,192.56/15,605.60
  6. Step 6: Final answer
    x = 11,720.10

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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.