Home / 19,644.90-27,109.18-11,690.70

Finding the Fourth Proportional to 19,644.90, 27,109.18 and 11,690.70

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Solution

The fourth proportional to 19,644.90, 27,109.18 and 11,690.70 is: 16,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.90 : 27,109.18 = 11,690.70 : x
  2. Step 2: Convert to fraction form
    19,644.90/27,109.18 = 11,690.70/x
  3. Step 3: Cross multiply
    19,644.90x = 27,109.18 × 11,690.70
  4. Step 4: Simplify right side
    19,644.90x = 316,925,290.63
  5. Step 5: Solve for x
    x = 316,925,290.63/19,644.90
  6. Step 6: Final answer
    x = 16,132.70

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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.