Home / 19,979.90-27,554.46-12,898.88

Finding the Fourth Proportional to 19,979.90, 27,554.46 and 12,898.88

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Solution

The fourth proportional to 19,979.90, 27,554.46 and 12,898.88 is: 17,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.90 : 27,554.46 = 12,898.88 : x
  2. Step 2: Convert to fraction form
    19,979.90/27,554.46 = 12,898.88/x
  3. Step 3: Cross multiply
    19,979.90x = 27,554.46 × 12,898.88
  4. Step 4: Simplify right side
    19,979.90x = 355,421,535.23
  5. Step 5: Solve for x
    x = 355,421,535.23/19,979.90
  6. Step 6: Final answer
    x = 17,788.96

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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.