Home / 39,045.62-53,882.88-21,140.63

Finding the Fourth Proportional to 39,045.62, 53,882.88 and 21,140.63

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Solution

The fourth proportional to 39,045.62, 53,882.88 and 21,140.63 is: 29,174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,045.62 : 53,882.88 = 21,140.63 : x
  2. Step 2: Convert to fraction form
    39,045.62/53,882.88 = 21,140.63/x
  3. Step 3: Cross multiply
    39,045.62x = 53,882.88 × 21,140.63
  4. Step 4: Simplify right side
    39,045.62x = 1,139,117,760
  5. Step 5: Solve for x
    x = 1,139,117,760/39,045.62
  6. Step 6: Final answer
    x = 29,174.03

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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.