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Finding the Fourth Proportional to 39,160.60, 58,740.90 and 11,458.60

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Solution

The fourth proportional to 39,160.60, 58,740.90 and 11,458.60 is: 17,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.60 : 58,740.90 = 11,458.60 : x
  2. Step 2: Convert to fraction form
    39,160.60/58,740.90 = 11,458.60/x
  3. Step 3: Cross multiply
    39,160.60x = 58,740.90 × 11,458.60
  4. Step 4: Simplify right side
    39,160.60x = 673,088,476.74
  5. Step 5: Solve for x
    x = 673,088,476.74/39,160.60
  6. Step 6: Final answer
    x = 17,187.90

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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.