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Finding the Fourth Proportional to 34,879.60, 48,134.34 and 18,964.40

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Solution

The fourth proportional to 34,879.60, 48,134.34 and 18,964.40 is: 26,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,879.60 : 48,134.34 = 18,964.40 : x
  2. Step 2: Convert to fraction form
    34,879.60/48,134.34 = 18,964.40/x
  3. Step 3: Cross multiply
    34,879.60x = 48,134.34 × 18,964.40
  4. Step 4: Simplify right side
    34,879.60x = 912,838,782.67
  5. Step 5: Solve for x
    x = 912,838,782.67/34,879.60
  6. Step 6: Final answer
    x = 26,171.14

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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.