Home / 19,721.49-27,225.23-12,659.91

Finding the Fourth Proportional to 19,721.49, 27,225.23 and 12,659.91

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Solution

The fourth proportional to 19,721.49, 27,225.23 and 12,659.91 is: 17,476.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.49 : 27,225.23 = 12,659.91 : x
  2. Step 2: Convert to fraction form
    19,721.49/27,225.23 = 12,659.91/x
  3. Step 3: Cross multiply
    19,721.49x = 27,225.23 × 12,659.91
  4. Step 4: Simplify right side
    19,721.49x = 344,668,898.23
  5. Step 5: Solve for x
    x = 344,668,898.23/19,721.49
  6. Step 6: Final answer
    x = 17,476.82

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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.