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Finding the Fourth Proportional to 39,392.70, 59,039.78 and 19,676.76

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Solution

The fourth proportional to 39,392.70, 59,039.78 and 19,676.76 is: 29,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,392.70 : 59,039.78 = 19,676.76 : x
  2. Step 2: Convert to fraction form
    39,392.70/59,039.78 = 19,676.76/x
  3. Step 3: Cross multiply
    39,392.70x = 59,039.78 × 19,676.76
  4. Step 4: Simplify right side
    39,392.70x = 1,161,711,483.13
  5. Step 5: Solve for x
    x = 1,161,711,483.13/39,392.70
  6. Step 6: Final answer
    x = 29,490.53

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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.