Home / 13,215.48-19,721.10-11,742.92

Finding the Fourth Proportional to 13,215.48, 19,721.10 and 11,742.92

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Solution

The fourth proportional to 13,215.48, 19,721.10 and 11,742.92 is: 17,523.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.48 : 19,721.10 = 11,742.92 : x
  2. Step 2: Convert to fraction form
    13,215.48/19,721.10 = 11,742.92/x
  3. Step 3: Cross multiply
    13,215.48x = 19,721.10 × 11,742.92
  4. Step 4: Simplify right side
    13,215.48x = 231,583,299.61
  5. Step 5: Solve for x
    x = 231,583,299.61/13,215.48
  6. Step 6: Final answer
    x = 17,523.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.