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Finding the Fourth Proportional to 18,560, 25,612.80 and 10,176.50

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Solution

The fourth proportional to 18,560, 25,612.80 and 10,176.50 is: 14,043.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,560 : 25,612.80 = 10,176.50 : x
  2. Step 2: Convert to fraction form
    18,560/25,612.80 = 10,176.50/x
  3. Step 3: Cross multiply
    18,560x = 25,612.80 × 10,176.50
  4. Step 4: Simplify right side
    18,560x = 260,648,659.20
  5. Step 5: Solve for x
    x = 260,648,659.20/18,560
  6. Step 6: Final answer
    x = 14,043.57

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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.