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Finding the Fourth Proportional to 12,391.59, 18,572.99 and 4,595.43

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Solution

The fourth proportional to 12,391.59, 18,572.99 and 4,595.43 is: 6,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.59 : 18,572.99 = 4,595.43 : x
  2. Step 2: Convert to fraction form
    12,391.59/18,572.99 = 4,595.43/x
  3. Step 3: Cross multiply
    12,391.59x = 18,572.99 × 4,595.43
  4. Step 4: Simplify right side
    12,391.59x = 85,350,852.46
  5. Step 5: Solve for x
    x = 85,350,852.46/12,391.59
  6. Step 6: Final answer
    x = 6,887.80

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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.