Home / 19,679.21-27,141.95-12,606.29

Finding the Fourth Proportional to 19,679.21, 27,141.95 and 12,606.29

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Solution

The fourth proportional to 19,679.21, 27,141.95 and 12,606.29 is: 17,386.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.21 : 27,141.95 = 12,606.29 : x
  2. Step 2: Convert to fraction form
    19,679.21/27,141.95 = 12,606.29/x
  3. Step 3: Cross multiply
    19,679.21x = 27,141.95 × 12,606.29
  4. Step 4: Simplify right side
    19,679.21x = 342,159,292.87
  5. Step 5: Solve for x
    x = 342,159,292.87/19,679.21
  6. Step 6: Final answer
    x = 17,386.84

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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.