Home / 19,876.07-27,429.30-11,378.16

Finding the Fourth Proportional to 19,876.07, 27,429.30 and 11,378.16

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Solution

The fourth proportional to 19,876.07, 27,429.30 and 11,378.16 is: 15,702.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.07 : 27,429.30 = 11,378.16 : x
  2. Step 2: Convert to fraction form
    19,876.07/27,429.30 = 11,378.16/x
  3. Step 3: Cross multiply
    19,876.07x = 27,429.30 × 11,378.16
  4. Step 4: Simplify right side
    19,876.07x = 312,094,964.09
  5. Step 5: Solve for x
    x = 312,094,964.09/19,876.07
  6. Step 6: Final answer
    x = 15,702.04

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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.