Home / 39,142.80-58,746.60-18,115.20

Finding the Fourth Proportional to 39,142.80, 58,746.60 and 18,115.20

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Solution

The fourth proportional to 39,142.80, 58,746.60 and 18,115.20 is: 27,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,142.80 : 58,746.60 = 18,115.20 : x
  2. Step 2: Convert to fraction form
    39,142.80/58,746.60 = 18,115.20/x
  3. Step 3: Cross multiply
    39,142.80x = 58,746.60 × 18,115.20
  4. Step 4: Simplify right side
    39,142.80x = 1,064,206,408.32
  5. Step 5: Solve for x
    x = 1,064,206,408.32/39,142.80
  6. Step 6: Final answer
    x = 27,187.79

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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.