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Finding the Fourth Proportional to 39,769.80, 59,658.30 and 16,391.40

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Solution

The fourth proportional to 39,769.80, 59,658.30 and 16,391.40 is: 24,588.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.80 : 59,658.30 = 16,391.40 : x
  2. Step 2: Convert to fraction form
    39,769.80/59,658.30 = 16,391.40/x
  3. Step 3: Cross multiply
    39,769.80x = 59,658.30 × 16,391.40
  4. Step 4: Simplify right side
    39,769.80x = 977,883,058.62
  5. Step 5: Solve for x
    x = 977,883,058.62/39,769.80
  6. Step 6: Final answer
    x = 24,588.58

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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.