Home / 39,425.22-54,406.35-21,520.08

Finding the Fourth Proportional to 39,425.22, 54,406.35 and 21,520.08

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Solution

The fourth proportional to 39,425.22, 54,406.35 and 21,520.08 is: 29,697.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.22 : 54,406.35 = 21,520.08 : x
  2. Step 2: Convert to fraction form
    39,425.22/54,406.35 = 21,520.08/x
  3. Step 3: Cross multiply
    39,425.22x = 54,406.35 × 21,520.08
  4. Step 4: Simplify right side
    39,425.22x = 1,170,829,004.51
  5. Step 5: Solve for x
    x = 1,170,829,004.51/39,425.22
  6. Step 6: Final answer
    x = 29,697.46

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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.