Home / 19,872.23-27,417.69-11,911.55

Finding the Fourth Proportional to 19,872.23, 27,417.69 and 11,911.55

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Solution

The fourth proportional to 19,872.23, 27,417.69 and 11,911.55 is: 16,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.23 : 27,417.69 = 11,911.55 : x
  2. Step 2: Convert to fraction form
    19,872.23/27,417.69 = 11,911.55/x
  3. Step 3: Cross multiply
    19,872.23x = 27,417.69 × 11,911.55
  4. Step 4: Simplify right side
    19,872.23x = 326,587,048.23
  5. Step 5: Solve for x
    x = 326,587,048.23/19,872.23
  6. Step 6: Final answer
    x = 16,434.35

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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.