Home / 19,728.48-27,238.32-12,658.08

Finding the Fourth Proportional to 19,728.48, 27,238.32 and 12,658.08

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Solution

The fourth proportional to 19,728.48, 27,238.32 and 12,658.08 is: 17,476.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.48 : 27,238.32 = 12,658.08 : x
  2. Step 2: Convert to fraction form
    19,728.48/27,238.32 = 12,658.08/x
  3. Step 3: Cross multiply
    19,728.48x = 27,238.32 × 12,658.08
  4. Step 4: Simplify right side
    19,728.48x = 344,784,833.63
  5. Step 5: Solve for x
    x = 344,784,833.63/19,728.48
  6. Step 6: Final answer
    x = 17,476.50

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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.