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Finding the Fourth Proportional to 39,877.60, 59,821.80 and 14,911.60

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Solution

The fourth proportional to 39,877.60, 59,821.80 and 14,911.60 is: 22,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.60 : 59,821.80 = 14,911.60 : x
  2. Step 2: Convert to fraction form
    39,877.60/59,821.80 = 14,911.60/x
  3. Step 3: Cross multiply
    39,877.60x = 59,821.80 × 14,911.60
  4. Step 4: Simplify right side
    39,877.60x = 892,038,752.88
  5. Step 5: Solve for x
    x = 892,038,752.88/39,877.60
  6. Step 6: Final answer
    x = 22,369.42

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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.