Home / 39,235.67-54,145.80-21,330.63

Finding the Fourth Proportional to 39,235.67, 54,145.80 and 21,330.63

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Solution

The fourth proportional to 39,235.67, 54,145.80 and 21,330.63 is: 29,436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.67 : 54,145.80 = 21,330.63 : x
  2. Step 2: Convert to fraction form
    39,235.67/54,145.80 = 21,330.63/x
  3. Step 3: Cross multiply
    39,235.67x = 54,145.80 × 21,330.63
  4. Step 4: Simplify right side
    39,235.67x = 1,154,964,025.85
  5. Step 5: Solve for x
    x = 1,154,964,025.85/39,235.67
  6. Step 6: Final answer
    x = 29,436.58

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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.