Home / 12,938.11-19,357.95-7,995.49

Finding the Fourth Proportional to 12,938.11, 19,357.95 and 7,995.49

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Solution

The fourth proportional to 12,938.11, 19,357.95 and 7,995.49 is: 11,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.11 : 19,357.95 = 7,995.49 : x
  2. Step 2: Convert to fraction form
    12,938.11/19,357.95 = 7,995.49/x
  3. Step 3: Cross multiply
    12,938.11x = 19,357.95 × 7,995.49
  4. Step 4: Simplify right side
    12,938.11x = 154,776,198.86
  5. Step 5: Solve for x
    x = 154,776,198.86/12,938.11
  6. Step 6: Final answer
    x = 11,962.82

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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.