Home / 19,789.52-27,312.12-11,289.68

Finding the Fourth Proportional to 19,789.52, 27,312.12 and 11,289.68

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Solution

The fourth proportional to 19,789.52, 27,312.12 and 11,289.68 is: 15,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.52 : 27,312.12 = 11,289.68 : x
  2. Step 2: Convert to fraction form
    19,789.52/27,312.12 = 11,289.68/x
  3. Step 3: Cross multiply
    19,789.52x = 27,312.12 × 11,289.68
  4. Step 4: Simplify right side
    19,789.52x = 308,345,060.78
  5. Step 5: Solve for x
    x = 308,345,060.78/19,789.52
  6. Step 6: Final answer
    x = 15,581.23

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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.