Home / 39,139.84-58,709.04-15,765.72

Finding the Fourth Proportional to 39,139.84, 58,709.04 and 15,765.72

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Solution

The fourth proportional to 39,139.84, 58,709.04 and 15,765.72 is: 23,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.84 : 58,709.04 = 15,765.72 : x
  2. Step 2: Convert to fraction form
    39,139.84/58,709.04 = 15,765.72/x
  3. Step 3: Cross multiply
    39,139.84x = 58,709.04 × 15,765.72
  4. Step 4: Simplify right side
    39,139.84x = 925,590,286.11
  5. Step 5: Solve for x
    x = 925,590,286.11/39,139.84
  6. Step 6: Final answer
    x = 23,648.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.