Home / 12,890.88-19,335.06-4,132.08

Finding the Fourth Proportional to 12,890.88, 19,335.06 and 4,132.08

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Solution

The fourth proportional to 12,890.88, 19,335.06 and 4,132.08 is: 6,197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.88 : 19,335.06 = 4,132.08 : x
  2. Step 2: Convert to fraction form
    12,890.88/19,335.06 = 4,132.08/x
  3. Step 3: Cross multiply
    12,890.88x = 19,335.06 × 4,132.08
  4. Step 4: Simplify right side
    12,890.88x = 79,894,014.72
  5. Step 5: Solve for x
    x = 79,894,014.72/12,890.88
  6. Step 6: Final answer
    x = 6,197.72

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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.