Home / 39,438.05-54,425.63-21,534.19

Finding the Fourth Proportional to 39,438.05, 54,425.63 and 21,534.19

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Solution

The fourth proportional to 39,438.05, 54,425.63 and 21,534.19 is: 29,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,438.05 : 54,425.63 = 21,534.19 : x
  2. Step 2: Convert to fraction form
    39,438.05/54,425.63 = 21,534.19/x
  3. Step 3: Cross multiply
    39,438.05x = 54,425.63 × 21,534.19
  4. Step 4: Simplify right side
    39,438.05x = 1,172,011,775.06
  5. Step 5: Solve for x
    x = 1,172,011,775.06/39,438.05
  6. Step 6: Final answer
    x = 29,717.80

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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.