Home / 39,072.15-58,615.53-12,778.32

Finding the Fourth Proportional to 39,072.15, 58,615.53 and 12,778.32

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Solution

The fourth proportional to 39,072.15, 58,615.53 and 12,778.32 is: 19,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072.15 : 58,615.53 = 12,778.32 : x
  2. Step 2: Convert to fraction form
    39,072.15/58,615.53 = 12,778.32/x
  3. Step 3: Cross multiply
    39,072.15x = 58,615.53 × 12,778.32
  4. Step 4: Simplify right side
    39,072.15x = 749,007,999.31
  5. Step 5: Solve for x
    x = 749,007,999.31/39,072.15
  6. Step 6: Final answer
    x = 19,169.87

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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.