Home / 19,488.61-26,876.34-12,771.80

Finding the Fourth Proportional to 19,488.61, 26,876.34 and 12,771.80

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Solution

The fourth proportional to 19,488.61, 26,876.34 and 12,771.80 is: 17,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.61 : 26,876.34 = 12,771.80 : x
  2. Step 2: Convert to fraction form
    19,488.61/26,876.34 = 12,771.80/x
  3. Step 3: Cross multiply
    19,488.61x = 26,876.34 × 12,771.80
  4. Step 4: Simplify right side
    19,488.61x = 343,259,040.97
  5. Step 5: Solve for x
    x = 343,259,040.97/19,488.61
  6. Step 6: Final answer
    x = 17,613.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.