Home / 12,988.11-19,471.23-5,192.67

Finding the Fourth Proportional to 12,988.11, 19,471.23 and 5,192.67

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Solution

The fourth proportional to 12,988.11, 19,471.23 and 5,192.67 is: 7,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.11 : 19,471.23 = 5,192.67 : x
  2. Step 2: Convert to fraction form
    12,988.11/19,471.23 = 5,192.67/x
  3. Step 3: Cross multiply
    12,988.11x = 19,471.23 × 5,192.67
  4. Step 4: Simplify right side
    12,988.11x = 101,107,671.88
  5. Step 5: Solve for x
    x = 101,107,671.88/12,988.11
  6. Step 6: Final answer
    x = 7,784.63

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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.