Home / 39,129.68-53,999.88-22,130.48

Finding the Fourth Proportional to 39,129.68, 53,999.88 and 22,130.48

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Solution

The fourth proportional to 39,129.68, 53,999.88 and 22,130.48 is: 30,540.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,129.68 : 53,999.88 = 22,130.48 : x
  2. Step 2: Convert to fraction form
    39,129.68/53,999.88 = 22,130.48/x
  3. Step 3: Cross multiply
    39,129.68x = 53,999.88 × 22,130.48
  4. Step 4: Simplify right side
    39,129.68x = 1,195,043,264.34
  5. Step 5: Solve for x
    x = 1,195,043,264.34/39,129.68
  6. Step 6: Final answer
    x = 30,540.58

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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.