Home / 39,078.45-58,630.23-12,777.21

Finding the Fourth Proportional to 39,078.45, 58,630.23 and 12,777.21

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Solution

The fourth proportional to 39,078.45, 58,630.23 and 12,777.21 is: 19,169.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.45 : 58,630.23 = 12,777.21 : x
  2. Step 2: Convert to fraction form
    39,078.45/58,630.23 = 12,777.21/x
  3. Step 3: Cross multiply
    39,078.45x = 58,630.23 × 12,777.21
  4. Step 4: Simplify right side
    39,078.45x = 749,130,761.06
  5. Step 5: Solve for x
    x = 749,130,761.06/39,078.45
  6. Step 6: Final answer
    x = 19,169.92

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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.