Home / 39,326.56-54,270.18-21,421.50

Finding the Fourth Proportional to 39,326.56, 54,270.18 and 21,421.50

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Solution

The fourth proportional to 39,326.56, 54,270.18 and 21,421.50 is: 29,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,326.56 : 54,270.18 = 21,421.50 : x
  2. Step 2: Convert to fraction form
    39,326.56/54,270.18 = 21,421.50/x
  3. Step 3: Cross multiply
    39,326.56x = 54,270.18 × 21,421.50
  4. Step 4: Simplify right side
    39,326.56x = 1,162,548,660.87
  5. Step 5: Solve for x
    x = 1,162,548,660.87/39,326.56
  6. Step 6: Final answer
    x = 29,561.41

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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.