Home / 38,011.78-57,017.70-10,309.78

Finding the Fourth Proportional to 38,011.78, 57,017.70 and 10,309.78

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Solution

The fourth proportional to 38,011.78, 57,017.70 and 10,309.78 is: 15,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,011.78 : 57,017.70 = 10,309.78 : x
  2. Step 2: Convert to fraction form
    38,011.78/57,017.70 = 10,309.78/x
  3. Step 3: Cross multiply
    38,011.78x = 57,017.70 × 10,309.78
  4. Step 4: Simplify right side
    38,011.78x = 587,839,943.11
  5. Step 5: Solve for x
    x = 587,839,943.11/38,011.78
  6. Step 6: Final answer
    x = 15,464.68

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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.