Home / 39,609.79-59,416.47-12,957.30

Finding the Fourth Proportional to 39,609.79, 59,416.47 and 12,957.30

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Solution

The fourth proportional to 39,609.79, 59,416.47 and 12,957.30 is: 19,436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.79 : 59,416.47 = 12,957.30 : x
  2. Step 2: Convert to fraction form
    39,609.79/59,416.47 = 12,957.30/x
  3. Step 3: Cross multiply
    39,609.79x = 59,416.47 × 12,957.30
  4. Step 4: Simplify right side
    39,609.79x = 769,876,664.86
  5. Step 5: Solve for x
    x = 769,876,664.86/39,609.79
  6. Step 6: Final answer
    x = 19,436.53

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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.