Home / 39,325.80-54,270.59-21,421.76

Finding the Fourth Proportional to 39,325.80, 54,270.59 and 21,421.76

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Solution

The fourth proportional to 39,325.80, 54,270.59 and 21,421.76 is: 29,562.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.80 : 54,270.59 = 21,421.76 : x
  2. Step 2: Convert to fraction form
    39,325.80/54,270.59 = 21,421.76/x
  3. Step 3: Cross multiply
    39,325.80x = 54,270.59 × 21,421.76
  4. Step 4: Simplify right side
    39,325.80x = 1,162,571,554.04
  5. Step 5: Solve for x
    x = 1,162,571,554.04/39,325.80
  6. Step 6: Final answer
    x = 29,562.57

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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.