Home / 12,348.79-18,520.75-4,555.78

Finding the Fourth Proportional to 12,348.79, 18,520.75 and 4,555.78

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Solution

The fourth proportional to 12,348.79, 18,520.75 and 4,555.78 is: 6,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.79 : 18,520.75 = 4,555.78 : x
  2. Step 2: Convert to fraction form
    12,348.79/18,520.75 = 4,555.78/x
  3. Step 3: Cross multiply
    12,348.79x = 18,520.75 × 4,555.78
  4. Step 4: Simplify right side
    12,348.79x = 84,376,462.44
  5. Step 5: Solve for x
    x = 84,376,462.44/12,348.79
  6. Step 6: Final answer
    x = 6,832.77

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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.