Home / 19,668.42-27,137.70-11,490.74

Finding the Fourth Proportional to 19,668.42, 27,137.70 and 11,490.74

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Solution

The fourth proportional to 19,668.42, 27,137.70 and 11,490.74 is: 15,854.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.42 : 27,137.70 = 11,490.74 : x
  2. Step 2: Convert to fraction form
    19,668.42/27,137.70 = 11,490.74/x
  3. Step 3: Cross multiply
    19,668.42x = 27,137.70 × 11,490.74
  4. Step 4: Simplify right side
    19,668.42x = 311,832,254.90
  5. Step 5: Solve for x
    x = 311,832,254.90/19,668.42
  6. Step 6: Final answer
    x = 15,854.46

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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.