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Finding the Fourth Proportional to 40,385.79, 60,588.45 and 12,683.79

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Solution

The fourth proportional to 40,385.79, 60,588.45 and 12,683.79 is: 19,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,385.79 : 60,588.45 = 12,683.79 : x
  2. Step 2: Convert to fraction form
    40,385.79/60,588.45 = 12,683.79/x
  3. Step 3: Cross multiply
    40,385.79x = 60,588.45 × 12,683.79
  4. Step 4: Simplify right side
    40,385.79x = 768,491,176.23
  5. Step 5: Solve for x
    x = 768,491,176.23/40,385.79
  6. Step 6: Final answer
    x = 19,028.75

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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.