Home / 39,628.96-59,435.12-11,920.80

Finding the Fourth Proportional to 39,628.96, 59,435.12 and 11,920.80

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Solution

The fourth proportional to 39,628.96, 59,435.12 and 11,920.80 is: 17,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.96 : 59,435.12 = 11,920.80 : x
  2. Step 2: Convert to fraction form
    39,628.96/59,435.12 = 11,920.80/x
  3. Step 3: Cross multiply
    39,628.96x = 59,435.12 × 11,920.80
  4. Step 4: Simplify right side
    39,628.96x = 708,514,178.50
  5. Step 5: Solve for x
    x = 708,514,178.50/39,628.96
  6. Step 6: Final answer
    x = 17,878.70

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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.