Home / 39,160.45-54,041.24-21,255.30

Finding the Fourth Proportional to 39,160.45, 54,041.24 and 21,255.30

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Solution

The fourth proportional to 39,160.45, 54,041.24 and 21,255.30 is: 29,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.45 : 54,041.24 = 21,255.30 : x
  2. Step 2: Convert to fraction form
    39,160.45/54,041.24 = 21,255.30/x
  3. Step 3: Cross multiply
    39,160.45x = 54,041.24 × 21,255.30
  4. Step 4: Simplify right side
    39,160.45x = 1,148,662,768.57
  5. Step 5: Solve for x
    x = 1,148,662,768.57/39,160.45
  6. Step 6: Final answer
    x = 29,332.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.