Home / 19,885.16-27,441.58-11,387.40

Finding the Fourth Proportional to 19,885.16, 27,441.58 and 11,387.40

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Solution

The fourth proportional to 19,885.16, 27,441.58 and 11,387.40 is: 15,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.16 : 27,441.58 = 11,387.40 : x
  2. Step 2: Convert to fraction form
    19,885.16/27,441.58 = 11,387.40/x
  3. Step 3: Cross multiply
    19,885.16x = 27,441.58 × 11,387.40
  4. Step 4: Simplify right side
    19,885.16x = 312,488,248.09
  5. Step 5: Solve for x
    x = 312,488,248.09/19,885.16
  6. Step 6: Final answer
    x = 15,714.65

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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.