Home / 19,720.74-27,208.53-11,335.62

Finding the Fourth Proportional to 19,720.74, 27,208.53 and 11,335.62

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Solution

The fourth proportional to 19,720.74, 27,208.53 and 11,335.62 is: 15,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.74 : 27,208.53 = 11,335.62 : x
  2. Step 2: Convert to fraction form
    19,720.74/27,208.53 = 11,335.62/x
  3. Step 3: Cross multiply
    19,720.74x = 27,208.53 × 11,335.62
  4. Step 4: Simplify right side
    19,720.74x = 308,425,556.84
  5. Step 5: Solve for x
    x = 308,425,556.84/19,720.74
  6. Step 6: Final answer
    x = 15,639.65

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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.