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Finding the Fourth Proportional to 13,291.60, 19,937.04 and 4,057.60

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Solution

The fourth proportional to 13,291.60, 19,937.04 and 4,057.60 is: 6,086.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.60 : 19,937.04 = 4,057.60 : x
  2. Step 2: Convert to fraction form
    13,291.60/19,937.04 = 4,057.60/x
  3. Step 3: Cross multiply
    13,291.60x = 19,937.04 × 4,057.60
  4. Step 4: Simplify right side
    13,291.60x = 80,896,533.50
  5. Step 5: Solve for x
    x = 80,896,533.50/13,291.60
  6. Step 6: Final answer
    x = 6,086.29

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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.