Home / 39,078.15-58,622.69-12,784.96

Finding the Fourth Proportional to 39,078.15, 58,622.69 and 12,784.96

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Solution

The fourth proportional to 39,078.15, 58,622.69 and 12,784.96 is: 19,179.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.15 : 58,622.69 = 12,784.96 : x
  2. Step 2: Convert to fraction form
    39,078.15/58,622.69 = 12,784.96/x
  3. Step 3: Cross multiply
    39,078.15x = 58,622.69 × 12,784.96
  4. Step 4: Simplify right side
    39,078.15x = 749,488,746.74
  5. Step 5: Solve for x
    x = 749,488,746.74/39,078.15
  6. Step 6: Final answer
    x = 19,179.23

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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.