Home / 39,144.80-58,749.60-18,117.20

Finding the Fourth Proportional to 39,144.80, 58,749.60 and 18,117.20

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Solution

The fourth proportional to 39,144.80, 58,749.60 and 18,117.20 is: 27,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,144.80 : 58,749.60 = 18,117.20 : x
  2. Step 2: Convert to fraction form
    39,144.80/58,749.60 = 18,117.20/x
  3. Step 3: Cross multiply
    39,144.80x = 58,749.60 × 18,117.20
  4. Step 4: Simplify right side
    39,144.80x = 1,064,378,253.12
  5. Step 5: Solve for x
    x = 1,064,378,253.12/39,144.80
  6. Step 6: Final answer
    x = 27,190.80

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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.