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Finding the Fourth Proportional to 13,152.90, 19,712.55 and 5,352.90

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Solution

The fourth proportional to 13,152.90, 19,712.55 and 5,352.90 is: 8,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.90 : 19,712.55 = 5,352.90 : x
  2. Step 2: Convert to fraction form
    13,152.90/19,712.55 = 5,352.90/x
  3. Step 3: Cross multiply
    13,152.90x = 19,712.55 × 5,352.90
  4. Step 4: Simplify right side
    13,152.90x = 105,519,308.90
  5. Step 5: Solve for x
    x = 105,519,308.90/13,152.90
  6. Step 6: Final answer
    x = 8,022.51

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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.