Home / 12,890.92-19,354.34-6,655.43

Finding the Fourth Proportional to 12,890.92, 19,354.34 and 6,655.43

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Solution

The fourth proportional to 12,890.92, 19,354.34 and 6,655.43 is: 9,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.92 : 19,354.34 = 6,655.43 : x
  2. Step 2: Convert to fraction form
    12,890.92/19,354.34 = 6,655.43/x
  3. Step 3: Cross multiply
    12,890.92x = 19,354.34 × 6,655.43
  4. Step 4: Simplify right side
    12,890.92x = 128,811,325.02
  5. Step 5: Solve for x
    x = 128,811,325.02/12,890.92
  6. Step 6: Final answer
    x = 9,992.41

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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.