Home / 39,789.70-59,688.29-11,709.77

Finding the Fourth Proportional to 39,789.70, 59,688.29 and 11,709.77

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Solution

The fourth proportional to 39,789.70, 59,688.29 and 11,709.77 is: 17,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.70 : 59,688.29 = 11,709.77 : x
  2. Step 2: Convert to fraction form
    39,789.70/59,688.29 = 11,709.77/x
  3. Step 3: Cross multiply
    39,789.70x = 59,688.29 × 11,709.77
  4. Step 4: Simplify right side
    39,789.70x = 698,935,878.43
  5. Step 5: Solve for x
    x = 698,935,878.43/39,789.70
  6. Step 6: Final answer
    x = 17,565.75

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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.