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Finding the Fourth Proportional to 39,622.60, 59,436.60 and 12,602.80

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Solution

The fourth proportional to 39,622.60, 59,436.60 and 12,602.80 is: 18,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,622.60 : 59,436.60 = 12,602.80 : x
  2. Step 2: Convert to fraction form
    39,622.60/59,436.60 = 12,602.80/x
  3. Step 3: Cross multiply
    39,622.60x = 59,436.60 × 12,602.80
  4. Step 4: Simplify right side
    39,622.60x = 749,067,582.48
  5. Step 5: Solve for x
    x = 749,067,582.48/39,622.60
  6. Step 6: Final answer
    x = 18,905.06

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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.