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Finding the Fourth Proportional to 39,384.40, 59,076.60 and 13,093.20

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Solution

The fourth proportional to 39,384.40, 59,076.60 and 13,093.20 is: 19,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.40 : 59,076.60 = 13,093.20 : x
  2. Step 2: Convert to fraction form
    39,384.40/59,076.60 = 13,093.20/x
  3. Step 3: Cross multiply
    39,384.40x = 59,076.60 × 13,093.20
  4. Step 4: Simplify right side
    39,384.40x = 773,501,739.12
  5. Step 5: Solve for x
    x = 773,501,739.12/39,384.40
  6. Step 6: Final answer
    x = 19,639.80

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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.