Home / 19,660.14-27,140.28-12,590.64

Finding the Fourth Proportional to 19,660.14, 27,140.28 and 12,590.64

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Solution

The fourth proportional to 19,660.14, 27,140.28 and 12,590.64 is: 17,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.14 : 27,140.28 = 12,590.64 : x
  2. Step 2: Convert to fraction form
    19,660.14/27,140.28 = 12,590.64/x
  3. Step 3: Cross multiply
    19,660.14x = 27,140.28 × 12,590.64
  4. Step 4: Simplify right side
    19,660.14x = 341,713,494.98
  5. Step 5: Solve for x
    x = 341,713,494.98/19,660.14
  6. Step 6: Final answer
    x = 17,381.03

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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.